Mineral processing in developing countries - Radetzki, Marian; Zorn, Stephen; United Nations Industrial Development Organization (New York : United Nations, 1980)
At head of title: United Nations Industrial Development Organization.
Prepared by Marian Radetzki and Stephen Zorn.
"ID/253"--P. 4 of cover.
"United Nations publication sales no. E.80.II.B.5"--P. 4 of cover.
Keywords: Mineral industries -- Developing countries