| Reference | {Deposit:: RABCHEVSKY, GEORGE A., THE TUNGSTEN INDUSTRY OF THE U.S.S.R.}{Deposit:: MINERAL ISSUES: AN ANALYTICAL SERIES, USDOI, BUREAU OF}{Deposit:: MINES, NOVEMBER 1988, P. 31.}{Deposit:: DAVY MCKEE CORPORATION, MINE/DEPOSIT PROFILE REPORT CENTRAL-}{Deposit:: LY CONTROLLED ECONOMY COUNTRIES, VERKHNE-KEYRAKTON, USSR,}{Deposit:: US BUREAU OF MINES, MAFO, DENVER, CO., MAY 1983.} |