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UNE 22091:1956

UNE 22091:1956

Cálculo de los rendimientos en las minas metálicas.

EFFICIENCY CALCULATION OF METAL MINES.

Publication Date:
1956-01-15 /Anulada
Cancellation date:
2022-10-27
Version confirmed on:
1999-10-01
ICS:

73.020 / Mining and quarrying

CTN:

CTN 22/SC 1 - Mineral raw materials

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