| Reference | {Deposit:: OCT 75, SKOLNI ZEMEPISNY ATLAS CESKOSLOVENSKE SOCISTICKE}{Deposit:: REP USTREDNI SPRAVA GEODEZIE A KARTOGRAFIE, 1960, P. 20}{Deposit:: COMMODITIES RESEARCH UNIT, LTD, LONDON, THE BASE METAL}{Deposit:: INDUSTRIES OF EASTERN EUROPE, VOL. 2, P. 103 (1990).} |