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- [37] EXTRACTION OF PLATINUM AND PALLADIUM WITH LOW-MELTING EXTRACTANTS FOR VOLTAMMETRIC DETERMINATION IN COPPER-NICKEL ORES INDUSTRIAL LABORATORY, 1989, 55 (10): : 1103 - 1105
- [38] Fuel oil reduction of polymetallic manganese sea nodules of Indian Ocean for extraction of nickel, copper and cobalt NML Technical Journal (National Metallurgical Laboratory, India), 1987, 29 (1-4): : 3 - 8
- [39] ATOMIC FLUORESCENCE DETERMINATION OF COPPER, NICKEL, COBALT, AND ZINC IN IRON-MANGANESE TERRESTRIAL OCEAN NODULES JOURNAL OF ANALYTICAL CHEMISTRY OF THE USSR, 1983, 38 (06): : 743 - 746