Biblioteca SEGEMAR

Vista normal Vista MARC Vista ISBD

McCulloch, Charles M.

Geologic investigations of underground coal mining problems McCulloch, Charles M.; Jeran, P. W.; Sullivan, C. D. - Washington Bureau of mines 1975 - 30 p. - RI 8022 .

Subjects--Topical Terms:
GEOLOGIA
GEOLOGY

Subjects--Index Terms: MINERIA SUBTERRANEA DE CARBON UNDERGROUND COAL MINING

Universal Decimal Class. No.: 55