Biblioteca SEGEMAR

Vista normal Vista MARC Vista ISBD

Summers, Charles R.

Noise abatement of pneumatic rock drill Summers, Charles R.; Murphy, John N. - Washington Bureau of mines 1974 - 45 p. - RI 7998 .

Subjects--Topical Terms:
MINERIA
MINING

Subjects--Index Terms: MINAS DE CARBON MAQUINARIA NEUMATICA TALADRO DE ROCAS COAL MINES PNEUMATIC MACHINERY ROCK-DRILLS

Universal Decimal Class. No.: 622