669.3
E99 2	Extractive metallurgy of copper, nickel, and cobalt [Текст] : based on an Intern. Symp. held in New York, Febr. 15-18, 1960, and sponsored by The Extractive Metallurgy Div. of The Metallurgical Soc., American Inst. of Mining, Metallurgical, and Petroleum Engineers / ed. by P. Queneau. — New York ; London : Interscience Publ., 1960. — XV, 647 p.