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Dimitriades, Basil

Geologic investigations of underground coal mining problems Dimitriades, Basil; Sutterfield, F. D.; Wesson, T. C.; Sturm, G. P. Jr. - Washington Bureau of mines 1975 - 19 p. - RI 8023 .

Subjects--Topical Terms:
MINERIA
MINING

Subjects--Index Terms: NIEBLA TOXICA CAMARA DE SMOG SMOG SMOG CHAMBER

Universal Decimal Class. No.: 622