AENOR - UNE 22091
EFFICIENCY CALCULATION OF METAL MINES.
inactive, Most Current
| Organization: | AENOR |
| Publication Date: | 15 January 1956 |
| Status: | inactive |
| Page Count: | 4 |
| ICS Code (Mining and quarrying): | 73.020 |
Document History
UNE 22091
January 15, 1956
EFFICIENCY CALCULATION OF METAL MINES.
A description is not available for this item.