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Economic condition of the US tungsten industry
Gelb, Bernard A., (1986)
Technological alternatives for the conservation of strategic and critical minerals, cobalt, chromium, manganese, and platinum-group metals : a review
Foster, Russell J., (1985)
Mangan, Chrom, Nickel, Kobalt, Vanadium. - 1989. - XV, 166 S. : graph. Darst., Kt. - Literaturverz. S. 154 - 165. - Zsfassung: engl.
Wagner, Hermann,
Nickel
Sibley, Scott F., (1985)
Cobalt: a strategic and critical resource for industrialized nations, supplied by developing nations
Sibley, Scott F., (1980)
Cobalt
Sibley, Scott F., (1979)