Reference | {Deposit:: ANSTETT,T.F., BLEIWAS,D.F., AND HURDELBRINK,R.J., 1985, TUNGSTEN AVAILABILI TY - MARKET ECONOMY COUNTRIES, U.S. BUREAU OF MINES, INFORMATION CIRCULAR 9025, 51P.}{Deposit:: PELLETIER,R.A., 1964, MINERAL RESOURCES OF SOUTH-CENTRAL AFRICA; CAPE TOWN, OXFORD UNIVERSITY PRESS, P. 131-132.}{Deposit:: ELLIS,M.W. AND STEVENS,C., THE MINERAL INDUSTRY OF THE TERRITORY OF SOUTH-W EST AFRICA, U.S. BUREAU OF MINES, MINERALS YEARBOOK 1978-79, VOL. III, AREA REP ORTS: INTERNATIONAL, P. 850.}{Deposit:: R.F. STEVENS, JR., 1973, TUNGSTEN, U.S. BUREAU OF MINES, MINERALS YEARBOOK, 1973; VOL. I., METALS, MINERALS AND FUELS, P. 1,256.}{Deposit:: ROSKILL INFORMATION SERVICES LTD., 1977, THE ECONOMICS OF TUNGSTEN; THIRD E DITION, LONDON, ROSKILL INFORMATION SERVICES LTD., P. 156.} |