Reference | {Deposit:: THE BRITISH SULPHUR CORP. LTD., 1980: WORLD SURVEY OF PHOSPHATE DEPOSITS, 4TH ED., LONDON}{Deposit:: MINING ANNUAL REVIEW 1981, LONDON}{Deposit:: BUSHINSKII, G.T., 1966: OLD PHOSPHORITES OF ASIA AND THEIR GENESIS, MOSKVA, TRANSLATED FROM RUSSIAN, JERUSALEM, 1969} |