AENOR - UNE 22400
WORKING PLANES OF COAL MINES.
inactive, Most Current
| Organization: | AENOR |
| Publication Date: | 15 July 1974 |
| Status: | inactive |
| Page Count: | 4 |
| ICS Code (Mining and quarrying): | 73.020 |
Document History
UNE 22400
July 15, 1974
WORKING PLANES OF COAL MINES.
A description is not available for this item.