| Reference | {Deposit:: THE BRITISH SULPHUR CORP. LTD., 1980: WORLD SURVEY OF PHOSPHATE DEPOSITS, 4TH ED., LONDON}{Deposit:: BUSHINSKII, G.T., 1966: OLD PHOSPHORITES OF ASIA AND THEIR GENESIS, MOSKVA, TRANSLATED FROM RUSSIAN, JERUSALEM, 1969}{Deposit:: LU YEN-HAO, 1979: CAMBRIAN MINERAL DEPOSITS IN CHINA AND THE BIO-ENVIRONMENTAL CONTROL HYPOTHESIS, PEKING}{Deposit:: MINING ENGINEERING, VOL.32, NO.3, 1980, P.287-288} |