MINERAL INVESTMENT IN AN ANXIOUS WORLD = L'INVESTISSEMENT MINIER DANS UN MONDE INQUIETBARBER CF.1980; NATIONAL AND INTERNATIONAL MANAGEMENT OF MINERAL RESOURCES, JOINT MEETING OF THE INSTITUTION OF MINING AND METALLURGY, THE SOCIETY OF MINING ENGINEERS OF AIME AND THE METALLURGICAL SOCIETY OF AIME/1980/LONDON; GBR; LONDON: INST. MINING METALLURGY; DA. 1980; 8 P.; BIBL. 9 REF.Conference Paper

ECONOMICS OF NEW SUPPLIES OF COPPER.BARBER CF.1978; MING CONGR. J.; U.S.A.; DA. 1978; VOL. 64; NO 3; PP. 33-37Article