kw.\*:("VOLUME-ET-VALEUR")
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ACTIVITE MINIERE AU KENYA ET EN OUGANDA EN 1971.1972; AMBASSADE FR.; 1972, NUM. 0874, P. 1 A 2Miscellaneous
ENERGY EFFICIENCY. HIGH OR LOW PRIORITY FOR MANAGEMENT IN THE INDUSTRIAL MINERALS INDUSTRY.JAMES B.1978; C.I.M. BULL.; CAN; DA. 1978; VOL. 71; NO 800; PP. 97-103Article
STATISTICS OF MINERAL PRODUCTION IN NIGERIA (1946 TO 1974) AND THE CONTRIBUTION OF THE MINERAL INDUSTRY TO THE NIGERIAN ECONOMY.KOGBE CA; OBIALO AU.1976; IN: GEOL. NIGERIA. CONF. GEOL. NIGERIA; ILE-IFE; 1974; LAGOS; ELIZABETHAN PUBL.; DA. 1976; PP. 391-426; BIBL. 5 REF.; 44 ILL.Conference Paper