| Reference | {Deposit:: COMMODITIES RESEARCH UNIT LIMITED, LONDON, THE BASE}{Deposit:: METAL INDUSTRIES OF EASTERN EUROPE, VOL. 2, PP. 83-84}{Deposit:: (NOV. 1990).}{Deposit:: MINING JOURNAL, LONDON, CZECHOSLOVAKI* MINING INDUSTRY,}{Deposit:: P. 45 (JULY 17, 1992).} |