Melting and casting of copper and its alloys : proceedings of a Seminer held in Calcutta on November 4, 1968 / Organised by Indian Copper Information Centre - Calcutta : Indian Copper Information Centre, 1968 - 14 p. ; 29 cm. Subjects--Topical Terms: Iron--MetallurgyDirect reduction (Metallurgy) Dewey Class. No.: 673.3