Reference | {Deposit:: BOMSEL AND VON HIRSCHHAUSEN, THE MINING AND}{Deposit:: METALLURGICAL INDUSTRIES IN EASTERN EUROPE, CERNA, VOL. 3,}{Deposit:: JULY 1991, P.217.}{Deposit:: COMMODITIES RESEARCH UNIT LIMITED, THE BASE METAL}{Deposit:: INDUSTRIES OF EASTERN EUROPE, VOL. 1, 1990.}{Deposit:: ATLAS OF EASTERN EUROPE, CENTRAL INTELLIGENCE AGENCY,}{Deposit:: AUGUST 1990.}{Deposit:: HURLBUT, CORNELIUS S., DAN* MANUAL OF MINERALOGY,}{Deposit:: EIGHTEENTH EDITION, 1971.} |