59.080.60 (74)
91.100.15-20 (2)
91.100.15-30 (4)
91.100.30-10 (1)
Abrasives (103)
Accessories for lifting equipment (45)
Accident and disaster control (2)
Accommodation spaces (10)
Acid secondary cells and batteries (2)
Acids (58)
Acoustic measurements and noise abatement in general (93)
Acoustics and acoustic measurements (3)
Acoustics in building. Sound insulation (102)
Additive manufacturing (28)
Adhesives (140)
Advanced ceramics (193)
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Aerospace electric equipment and systems (219)
Aerospace engines and propulsion systems (6)
Aerospace fluid systems and components (142)
Agricultural machines and equipment in general (155)
Agricultural machines, implements and equipment (5)
Agricultural tractors and trailed vehicles (125)
Agriculture (Vocabularies) (37)
Aids and adaptation for moving (83)
Aids for blind or partially sighted people (21)
Aids for deaf and hearing impaired people (8)
Aids for disabled and handicapped persons in general (14)
Aids for disabled or handicapped persons (14)
Aids for incontinence and ostomy (41)
Air mode containers, pallets and nets (25)
Air quality in general (55)
Air quality (1)
Aircraft and space vehicle engineering (Vocabularies) (19)
Aircraft and space vehicles in general (48)
Aircraft tyres (7)
Alarm and warning systems (11)
Alcohols. Ethers (68)
Aldehydes and ketones (32)
Aliphatic hydrocarbons (22)
Aluminium and aluminium alloys (41)
Aluminium ores (32)
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Aluminium (2)
Ambient atmospheres (142)
Anaesthetic, respiratory and reanimation equipment (187)
Anhydrides (20)
Animal and vegetable fats and oils (159)
Animal feeding stuffs (81)
Animal husbandry and breeding (12)
Application layer (147)
Application of information technology in general (8)
Application of statistical methods (179)
Applications of information technology (1)
Aromatic hydrocarbons (17)
Astronomy. Geodesy. Geography (5)
Audio, video and audiovisual engineering (1)
Automatic identification and data capture techniques (40)
Auxiliary materials and additives for plastics (6)
Balancing and balancing machines (21)
Ball and plug valves (3)
Barrels. Drums. Canisters (13)
Bases (33)
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Binders. Sealing materials (54)
Binders (80)
Biofuels (31)
Biological evaluation of medical devices (58)
Biological properties of soils (97)
Biological sources and alternative sources of energy (80)
Biology. Botany. Zoology (24)
Birth control. Mechanical contraceptives (36)
Bodies and body components (30)
Body care equipment (23)
Boilers and heat exchangers (27)
Bolts, screws, studs (49)
Bolts, screws, studs (171)
Boring and milling machines (34)
Bottles. Pots. Jars (82)
Braking systems (106)
Brazing and soldering (55)
Bridge construction (10)
Broaching machines (7)
Building accessories (1)
Buildings and installations for processing and storage of agricultural produce (4)
Buildings in general (115)
Buildings (1)
Buses (4)
Butter (18)
Camping equipment and camp-sites (10)
Cans. Tins. Tubes (21)
Car informatics. On board computer systems (148)
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Cardboard (4)
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Cassettes and cartridges for magnetic tapes (48)
Ceilings. Floors. Stairs (18)
Cellular materials (80)
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Cereals, pulses and derived products (146)
Chain drives and their components (18)
Character symbols (1)
Characteristics and design of machines, apparatus, equipment (10)
Check valves (1)
Cheese (39)
Chemical analysis (171)
Chemical characteristics of soils (112)
Chemical elements (17)
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Chemical technology (Vocabularies) (26)
Chemicals for purification of water (12)
Chimneys, shafts, ducts (1)
Chocolate (6)
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Cinematography in general (2)
Civil engineering (Vocabularies) (4)
Civil engineering in general (4)
Cleanrooms and associated controlled environments (33)
Clocks (5)
Clothes (47)
Clothing industry (Vocabularies) (4)
Cloud computing (15)
Coals (109)
Coated fabrics (70)
Coatings and related processes used in aerospace industry (18)
Cocoa (15)
Coding of audio, video, multimedia and hypermedia information (64)
Coding of character sets (3)
Coding of graphical and photographical information (16)
Coffee and coffee substitutes (42)
Colour coding (26)
Colours and measurement of light (32)
Commercial refrigerating appliances (20)
Commercial vehicles in general (27)
Company organization and management in general (111)
Complete, filled transport packages (38)
Components for aerospace construction (113)
Components for conveyors (105)
Compressors and pneumatic machines (28)
Computer graphics (60)
Computer-aided design (CAD) (19)
Concrete and concrete products (131)
Concrete structures (69)
Construction drawings (43)
Construction equipment (69)
Construction industry in general (31)
Construction materials and building (Vocabularies) (35)
Construction materials in general (7)
Construction materials (3)
Construction of railways (2)
Construction technology (42)
Continuous handling equipment in general (12)
Continuous handling equipment (1)
Contractual aspects (10)
Control components (65)
Conveyors (40)
Cooking ranges, working tables, ovens and similar appliances (5)
Cookware, cutlery and flatware (42)
Cooling systems. Lubricating systems (11)
Copper and copper alloys (58)
Copper products (38)
Cork and cork products (99)
Corrosion of metals (188)
Cosmetics microbiology (9)
Cosmetics. Toiletries (50)
Couplings (44)
Couplings (2)
Cranes (177)
Crash protection and restraint systems (71)
Crude petroleum (17)
Cryogenic vessels (23)
Cutting tools in general (170)
Cutting tools (2)
Cycles (57)
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Data communication networks (1)
Data link layer (27)
Deck equipment and installations (64)
Dental equipment (178)
Dental implants (24)
Dental instruments (26)
Dental materials (133)
Dentistry in general (38)
Diagnostic equipment (21)
Diagnostic, maintenance and test equipment (128)
Dishwashers (2)
Dividing and tool-workpiece holding devices (117)
Document imaging applications (104)
Documents in administration, commerce and industry (23)
Domestic and commercial equipment. Entertainment. Sports (Vocabularies) (21)
Domestic refrigerating appliances (5)
Domestic safety (3)
Doors and windows (57)
Drainage systems (100)
Drawing equipment (51)
Drilling machines (19)
Drills, countersinks, reamers (70)
Drinking water (23)
Dyeing and finishing equipment (15)
Earth-moving machinery (270)
Earthworks. Excavations. Foundation construction. Underground works (114)
Ecolabelling (12)
Edible oils and fats. Oilseeds (2)
Education (17)
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Electrical and electronic equipment. Control systems (72)
Electrical and electronic equipment (211)
Electrical and electronic testing (1)
Electrical apparatus for explosive atmospheres (6)
Electrical equipment of ships and of marine structures (2)
Electroacoustics (2)
Electrochemical machines (4)
Electromagnetic compatibility (EMC) (1)
Electromagnetic compatibility in general (14)
Electronic components in general (2)
Electronic display devices (1)
Electronics (Vocabularies) (10)
Elements of buildings in general (10)
Enamels (89)
Energy and heat transfer engineering (Vocabularies) (28)
Energy and heat transfer engineering in general (29)
Energy efficiency. Energy conservation in general (14)
Engine block and internal components (44)
Environment and environmental protection in general (18)
Environment. Health protection. Safety (Vocabularies) (61)
Environmental economics. Sustainability (57)
Environmental impact assessment (2)
Environmental management (63)
Environmental protection (2)
Equipment for children (9)
Equipment for drilling and mine excavation (36)
Equipment for petroleum and natural gas industries in general (26)
Equipment for processing of minerals (29)
Equipment for storage, preparation and distribution of fertilizers (12)
Equipment for telex, teletext, telefax (1)
Equipment for the metallurgical industry (3)
Equipment for the paper industry (1)
Equipment for the rubber and plastics industries (5)
Ergonomics (309)
Essential oils (272)
Esters (16)
Examination of biological properties of water (116)
Examination of physical properties of water (64)
Examination of soils in general (97)
Examination of water for chemical substances (277)
Examination of water in general (51)
Exploratory, drilling and extraction equipment (181)
Explosion protection (9)
Explosives. Pyrotechnics and fireworks (41)
External sewage systems (52)
External structures (2)
External water conveyance systems (47)
Extraction and processing of petroleum and natural gas (59)
Farming and forestry in general (8)
Farming and forestry (2)
Fasteners in general (37)
Fasteners in general (2)
Fasteners (1)
Ferroalloys (97)
Ferrous metals in general (83)
Ferrous metals (5)
Fertilizers (118)
Fibre and particle boards (24)
Fibres and cables (1)
Files (4)
Films and sheets (76)
Filters, seals and contamination of fluids (98)
Finances. Banking. Monetary systems. Insurance (75)
Fire protection (65)
Fire-fighting (62)
Fire-resistance of building materials and elements (112)
Fish and fishery products (13)
Fishing and fish breeding (21)
Fissile materials and nuclear fuel technology (144)
Flanges, couplings and joints (33)
Flat steel products and semi-products (80)
Floor coverings (78)
Flow in closed conduits (73)
Flow in open channels (118)
Fluid power systems in general (51)
Fluid power systems (15)
Fluid systems and components for general use (Vocabularies) (22)
Food additives (19)
Food microbiology (185)
Food products in general (17)
Food technology (Vocabularies) (17)
Footwear (178)
Forensic science (8)
Forestry equipment (102)
Forging equipment. Presses. Shears (111)
Freight distribution of goods in general (6)
Fruits and derived products (68)
Fruits, vegetables and derived products in general (84)
Fruits. Vegetables (1)
Fuel furnaces (1)
Fuel systems (190)
Furniture (70)
Gas and steam turbines. Steam engines (47)
Gas cylinders (58)
Gas fuel burners (13)
Gas supply systems (5)
Gaseous fuels (24)
Gases for industrial application (65)
Gate valves (6)
Gears (105)
General methods of tests and analysis for food products (72)
General purpose containers (41)
General purpose pallets (30)
General standards related to shipbuilding and marine structures (73)
Generalities. Terminology. Standardization. Documentation (Vocabularies) (26)
Generating sets (33)
Generators (2)
Geology. Meteorology. Hydrology (47)
Geometrical Product Specification (GPS) (13)
Geotextiles (74)
Glass and ceramics industries (Vocabularies) (12)
Glass in building (205)
Glass in general (44)
Glass products (34)
Glazing and wiper systems (18)
Globe valves (2)
Governance and ethics (3)
Graphic technology in general (56)
Graphical symbols for use on electrical and electronics engineering drawings, diagrams, charts and in relevant technical product documentation (2)
Graphical symbols for use on information technology and telecommunications technical drawings and in relevant technical product documentation (24)
Graphical symbols for use on mechanical engineering and construction drawings, diagrams, plans, maps and in relevant technical product documentation (97)
Graphical symbols for use on specific equipment (75)
Graphical symbols in general (15)
Grinding and polishing machines (11)
Ground service and maintenance equipment (119)
Halogenated hydrocarbons (30)
Hand and arm protection (28)
Hand-held tools in general (35)
Hand-operated tools (85)
Harvesting equipment (31)
Haulage and hoisting equipment (23)
Head protective equipment (81)
Headgear. Clothing accessories. Fastening of clothing (4)
Health care services in general (4)
Health care technology (Vocabularies) (47)
Heat pumps (30)
Heat recovery. Thermal insulation (22)
Heat treatment (7)
Heat-treatable steels (32)
Heaters using other sources of energy (9)
Heating appliances in general (4)
Home economics in general (14)
Home textiles. Linen (6)
Horology in general (14)
Horticultural equipment (31)
Hoses and hose assemblies (105)
Hoses (106)
Hospital equipment (8)
Hulls and their structure elements (51)
Hunting (4)
Hydraulic energy engineering (6)
Hydraulic fluids (44)
Hydrogen technologies (1)
Hydrological properties of soils (16)
Ice cream and ice confectionery (5)
Identification cards. Chip cards. Biometrics (131)
Ignitability and burning behaviour of materials and products (115)
Image technology (Vocabularies) (43)
Immunity (21)
Implants for surgery, prosthetics and orthotics (326)
In vitro diagnostic test systems (51)
Incandescent lamps (1)
Inch screw threads (7)
Indicating and control devices (8)
Indoor sports equipment (29)
Industrial automation systems in general (44)
Industrial furnaces in general (19)
Industrial process measurement and control (740)
Industrial robots. Manipulators (41)
Industrial trucks (141)
Information coding (560)
Information sciences (156)
Information technology (IT) in general (114)
Information technology (Vocabularies) (75)
Information technology (1)
Inks. Printing inks (27)
Inland navigation vessels (83)
Inorganic chemicals in general (7)
Installations and equipment for waste disposal and treatment (15)
Installations in buildings in general (9)
Insulating oils (1)
Interface and interconnection equipment (343)
Interior lighting (9)
Internal combustion engines for road vehicles in general (6)
Internal combustion engines (139)
Iron and steel castings (40)
Iron and steel forgings (14)
Iron and steel pipes (98)
Iron and steel products in general (13)
Iron ores (111)
Irons (28)
Irrigation and drainage equipment (63)
IT applications in banking (51)
IT applications in building and construction industry (21)
IT applications in education (13)
IT applications in health care technology (291)
IT applications in industry (80)
IT applications in information, documentation and publishing (187)
IT applications in office work (113)
IT applications in other fields (145)
IT applications in science (131)
IT applications in trade (8)
IT applications in transport (447)
IT Security (106)
IT terminal and other peripheral equipment (131)
Items of art and handicrafts. Cultural property and heritage (1)
Jewellery (36)
Keys and keyways, splines (18)
Kitchen equipment in general (3)
Kitchen furniture (1)
Knitting machines (29)
Laboratory medicine in general (28)
Laboratory medicine (4)
Laboratory ware and related apparatus (66)
Laminated sheets (27)
Languages used in information technology (167)
Latex and raw rubber (133)
Lathes (14)
Laundry appliances (34)
Law. Administration (3)
Lead, zinc, tin and their alloys (31)
Leather and furs (207)
Leather technology in general (1)
Leg and foot protection (55)
Leisure and tourism in general (8)
Leisure. Tourism (33)
Lifejackets, buoyancy aids and flotation devices (23)
Lifting and cargo handling equipment (32)
Lifting appliances in general (5)
Lifts. Escalators (72)
Lighting in general (2)
Lighting, signalling and warning devices (28)
Limits and fits (36)
Linear and angular measurements in general (54)
Liquid and solid fuel burners (8)
Liquid fuels (73)
Liquid wastes. Sludge (10)
Livestock buildings, installations and equipment (14)
Looms. Weaving machines (84)
Lubricants, industrial oils and related products (105)
Machine tool systems in general (1)
Machine tools in general (64)
Machining centres (22)
Magnesium and magnesium alloys (44)
Magnesium products (7)
Magnetic disks (66)
Magnetic storage devices in general (16)
Magnetic tapes (33)
Maintenance services. Facilities management (10)
Man-made fibres (6)
Management of human resources (156)
Management systems (76)
Manganese ores (65)
Manufacturing engineering (Vocabularies) (80)
Manufacturing processes in the rubber and plastics industries (4)
Marine engines and propulsion systems (17)
Marine ventilation, air conditioning and heating systems (17)
Masonry (6)
Materials and articles in contact with foodstuffs (47)
Materials and components for shipbuilding (11)
Materials for aerospace construction in general (13)
Materials for aluminium production (150)
Materials for graphic technology (11)
Materials for the reinforcement of composites in general (14)
Materials handling equipment (Vocabularies) (46)
Measurement of fluid flow in general (1)
Measurement of time, velocity, acceleration, angular velocity (1)
Measurement of volume, mass, density, viscosity (55)
Measuring instruments (71)
Meat and meat products (38)
Mechanical engineering drawings (109)
Mechanical systems and components for general use (Vocabularies) (35)
Mechanical testing of metals (241)
Mechanical testing (2)
Medical equipment in general (40)
Medical microbiology (5)
Medical science (1)
Medical sciences and health care facilities in general (6)
Medicaments (31)
Metal fittings (17)
Metal structures (3)
Metallic coatings (176)
Metalliferous minerals and their concentrates (3)
Metallurgy (Vocabularies) (39)
Metric screw threads (20)
Metrology and measurement in general (50)
Metrology and measurement. Physical phenomena (Vocabularies) (32)
Mica based materials (1)
Microbiology in general (7)
Microbiology of water (43)
Microprocessor systems (16)
Military affairs. Military engineering. Weapons (1)
Military in general (10)
Milk and milk products in general (98)
Milk and processed milk products (125)
Milling tools (95)
Mineral materials and products (31)
Mining and minerals (Vocabularies) (14)
Mining and quarrying (13)
Miscellaneous domestic and commercial equipment (22)
Modular units and other devices (22)
Motion picture equipment (31)
Motion picture films. Cartridges (126)
Motorcycles and mopeds (86)
Motors (4)
Moulding equipment (43)
Multilayer applications (228)
Nanotechnologies (61)
Natural and applied sciences (Vocabularies) (31)
Natural fibres (42)
Natural gas (99)
Navigation and control equipment (48)
Network layer (53)
Networking (92)
Nickel and chromium products (15)
Nickel, chromium and their alloys (70)
Noise emitted by machines and equipment (139)
Noise emitted by means of transport (66)
Noise with respect to human beings (62)
Non-alcoholic beverages (6)
Non-alloyed steels (5)
Non-destructive testing of metals (53)
Non-destructive testing (177)
Non-ferrous metal pipes (11)
Non-ferrous metals in general (6)
Non-metalliferous minerals (40)
Nuclear energy in general (6)
Nuclear power plants. Safety (27)
Numerically controlled machines (56)
Nuts (51)
Nuts (77)
Occupational safety. Industrial hygiene (49)
Office machines (33)
Office paper (6)
Oilseeds (61)
On-board equipment and instruments (11)
Open systems interconnection (OSI) (5)
Open systems interconnection in general (71)
Ophthalmic equipment (180)
Optical equipment (213)
Optical measuring instruments (19)
Optical storage devices (74)
Optics and optical measurements in general (17)
Optics and optical measurements (3)
Optoelectronics. Laser equipment (96)
Organic acids (27)
Organic coatings (7)
Organic nitrogen compounds (20)
Other agricultural machines and equipment (4)
Other construction materials (1)
Other continuous handling equipment (12)
Other elements of buildings (8)
Other equipment for the chemical industry (17)
Other fasteners (18)
Other fluid power system components (25)
Other graphical symbols (9)
Other industrial automation systems (2)
Other inorganic chemicals (8)
Other iron and steel products (19)
Other lifting equipment (16)
Other machine tool systems (16)
Other machine tools (2)
Other medical equipment (24)
Other metalliferous minerals (28)
Other methods of testing of metals (62)
Other milk products (29)
Other mining equipment (2)
Other paint ingredients (4)
Other products of the chemical industry (2)
Other protective equipment (18)
Other road vehicle systems (2)
Other rubber and plastics products (63)
Other services (26)
Other sports equipment and facilities (3)
Other standards related to aids for disabled and handicapped people (15)
Other standards related to air quality (8)
Other standards related to analytical chemistry (13)
Other standards related to ceramics (6)
Other standards related to cinematography (31)
Other standards related to environmental protection (25)
Other standards related to farm buildings and installations (15)
Other standards related to freight distribution of goods (4)
Other standards related to graphic technology (54)
Other standards related to health care in general (9)
Other standards related to information coding (5)
Other standards related to laboratory medicine (6)
Other standards related to leather technology (1)
Other standards related to microbiology (27)
Other standards related to nuclear energy (2)
Other standards related to pharmaceutics (7)
Other standards related to photography (29)
Other standards related to protection against fire (15)
Other standards related to rotating machinery (4)
Other standards related to shipbuilding and marine structures (101)
Other standards related to soil quality (9)
Other standards related to technical drawings (8)
Other standards relating to leisure and tourism (13)
Other treatments and coatings (5)
Other tyres (20)
Other valves (2)
Other wood-based panels (3)
Outdoor and water sports equipment (24)
Oxides (7)
Packaging and distribution of goods (Vocabularies) (10)
Packaging and distribution of goods in general (68)
Paint and colour industries (Vocabularies) (23)
Paint coating equipment (2)
Paint coating processes (26)
Paint ingredients in general (3)
Paints and varnishes (413)
Paper and board insulating materials (1)
Paper and board (272)
Paper cards and tapes (13)
Paper production processes (4)
Paper products in general (4)
Paper products (13)
Paper technology (Vocabularies) (9)
Paper technology (1)
Particle size analysis. Sieving (73)
Passenger cars. Caravans and light trailers (49)
Patents. Intellectual property (9)
Pesticides and other agrochemicals in general (2)
Pesticides and other agrochemicals (1)
Petroleum and related technologies (Vocabularies) (15)
Petroleum products and natural gas handling equipment (162)
Petroleum products in general (141)
Phenols (14)
Photographic chemicals (53)
Photographic equipment. Projectors (78)
Photographic paper, films and plates. Cartridges (90)
Photography in general (12)
Physical layer (35)
Physical properties of soils (67)
Physicochemical methods of analysis (38)
Physics. Chemistry (82)
Piezoelectric devices (3)
Pigments and extenders (208)
Pins, nails (50)
Pipeline components and pipelines in general (57)
Pipeline components and pipelines (1)
Pipes and fittings of other materials (22)
Piping and couplings (98)
Piping systems (45)
Plain bearings (163)
Plant care equipment (111)
Plant growing (10)
Plants and equipment for the food industry (24)
Plastics fittings (213)
Plastics in general (361)
Plastics pipes and fittings for non fluid use (83)
Plastics pipes (344)
Plastics (9)
Playgrounds (4)
Plywood (20)
Pneumatic tools (71)
Pneumatic transport and its components (7)
Pollution, pollution control and conservation (66)
Postal services (1)
Powder metallurgy (144)
Power stations in general (5)
Precision mechanics. Jewellery (Vocabularies) (7)
Presentation layer (18)
Pressure charging and air/exhaust gas ducting systems (32)
Pressure vessels (89)
Primary cells and batteries (2)
Processes in the food industry (29)
Processes of the textile industry (3)
Processing equipment (70)
Product and company certification. Conformity assessment (133)
Product life-cycles (24)
Production in the chemical industry (10)
Production of metals (5)
Products in fibre-reinforced cement (39)
Products of non-ferrous metals in general (8)
Products of the chemical industry in general (2)
Products of the textile industry (15)
Properties of surfaces (118)
Protection against crime (13)
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Protection against excessive pressure (14)
Protection against falling and slipping (10)
Protection against fire in general (126)
Protection against fire (1)
Protective clothing (114)
Protective equipment in general (3)
Public buildings (13)
Public information symbols. Signs. Plates. Labels (29)
Publishing (27)
Pulps (155)
Pumps and motors (35)
Pumps (37)
Purchasing. Procurement. Logistics (2)
Quality and environmental management in health care (1)
Quality in general (2)
Quality management and quality assurance (100)
Quantities and units (47)
Radiation measurements (195)
Radiation protection (165)
Radiographic equipment (2)
Radiographic films (17)
Rails and railway components (26)
Railway engineering (Vocabularies) (1)
Railway engineering in general (17)
Railway rolling stock in general (27)
Railway rolling stock (2)
Raw materials and raw glass (30)
Raw materials for rubber and plastics in general (5)
Raw materials (3)
Raw skins, hides and pelts (16)
Reactor engineering (20)
Recycling (4)
Refractories (173)
Refrigerants and antifreezes (19)
Refrigerating technology (17)
Reinforced plastics (109)
Reproduction equipment (65)
Research and development (23)
Respiratory protective devices (68)
Rivets (21)
Rivets (38)
Road construction materials (15)
Road construction (18)
Road equipment and installations (4)
Road transport (184)
Road vehicle engineering (Vocabularies) (46)
Road vehicle systems in general (4)
Road vehicle systems (2)
Road vehicle tyres (49)
Road vehicles in general (149)
Rolling bearings (122)
Rolling, extruding and drawing equipment (2)
Roofs (4)
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Rotating machinery in general (4)
Rubber and plastics industries (Vocabularies) (19)
Rubber and plastics products in general (15)
Rubber and plastics products (15)
Rubber compounding ingredients (83)
Rubber (322)
Sacks. Bags (33)
Safety of machinery (129)
Salts (200)
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Screw threads in general (7)
Screw threads (17)
Seagoing vessels (26)
Seals for pipe and hose assemblies (3)
Seals, glands (8)
Seals (61)
Seismic and vibration protection (14)
Semi-manufactures of timber (37)
Sensory analysis (58)
Services for companies (7)
Services for consumers (98)
Services in general (4)
Services. Company organization, management and quality. Administration. Transport. Sociology. (Vocabularies) (37)
Session layer (8)
Sewage water (41)
Sewing machines and other equipment for the clothing industry (8)
Shafts (2)
Shipbuilding and marine structures (Vocabularies) (16)
Shipbuilding and marine structures in general (1)
Shipbuilding and marine structures (1)
Small craft (186)
Sociology. Demography (5)
Software (314)
Soil quality and pedology in general (39)
Soil quality. Pedology (15)
Soil-working equipment (24)
Solar energy engineering (34)
Solid fuel heaters (1)
Solid fuels (128)
Solid wastes (5)
Solvents (2)
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