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Visnapuu, A.

Noise reduction of a pneumatic rock drill Visnapuu, A.; Jensen, J. W. - Washington Bureau of mines 1975 - 23 p. - RI 8082 .

Subjects--Topical Terms:
MINERIA
MINING

Subjects--Index Terms: CONTROL DE RUIDO TALADRO DE ROCAS Noise control NOISE CONTROL ROCK-DRILLS

Universal Decimal Class. No.: 622