Biblioteca SEGEMAR

Vista normal Vista MARC Vista ISBD

Paone, James

Drillability studies-laboratory percussive drilling - Washington Bureau of Mines 1969 - ii, 18 p. il 26 cm - RI 7300 .

Subjects--Topical Terms:
borings
rocks
drilling equipment

Subjects--Index Terms: Rock-drills

Universal Decimal Class. No.: 622