| Reference | {Deposit:: SOVIET GEOGRAPHY. VOL. 11, 1970, P. 509-10}{Deposit:: SHABAD, T., BASIC INDUSTRIAL RESOURCES OF THE USSR. COLUMBIA}{Deposit:: UNIV. PRESS NEW YORK. 1969, P. 187.}{Deposit:: IRON AND STEEL WORKS OF THE USSR. METAL BULLETIN BOOKS LTD.}{Deposit:: 1992, P. 6.} |