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sklademVydáno: 1955-02-15
UNE 22090:1955
EFFICIENCY CALCULATION OF THE COAL MINES.
Cálculo de rendimientos en las minas de carbón.
CURRENCY
| Označení normy: | UNE 22090:1955 |
| Počet stran: | 2 |
| Vydáno: | 1955-02-15 |
DESCRIPTION
This standard UNE 22090:1955 EFFICIENCY CALCULATION OF THE COAL MINES. is classified in these ICS categories:
- 73.020
Categories: