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A NEW GOLD MINE1980; ENGNG MING J.; USA; DA. 1980; VOL. 181; NO 7; PP. 163Article

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BP ACQUIRES A NEW S. AFRICAN COAL INTEREST.1978; FINANCIAL TIMES; G.B.; DA. 1978; NO 27457; PP. 25Article

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A LONG-TERM CONTRACT.1978; ENGNG MING J.; USA; DA. 1978; VOL. 179; NO 10; PP. 300Article

CANADA: COMPANY OPERATIONS 1980-81 = CANADA: L'ACTIVITE DES COMPAGNIES EN 1980-811981; WEST. MINER (CALGARY); ISSN 0700-4435; CAN; DA. 1981; VOL. 54; NO 4; PP. 62-121Article

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