Sedimentary manganese ores by I.M. Varentsov ;Translated from the Russian by Scripta Technica inc. Translation editor: D.B. Stewart. Varent︠s︡ov, I. M. Manganese ores. Manganese ores Russia (Federation) Siberia. TN490.M3 V3 553.46 VAS Includes bibliographical references and index. Amsterdam ; New York : Elsevier Pub. Co., c1964. c1964. 1964 Text 119 p. : eng engrus Russia (Federation) Siberia.