| Reference | {Deposit:: BRITISH SULPHUR CORPORATION, WORLD SURVEY OF PHOSPHATE}{Deposit:: DEPOSITS, FOURTH ED, LONDON, 1980, PP. 134-141.}{Deposit:: PHOSPHOROUS & POTASSIUM, NO. 105, JAN/FEB 1980.}{Deposit:: PHOSPHOROUS & POTASSIUM, NO. 106, MAR/APR 1980, PP. 34-43.}{Deposit:: E & MJ, JULY 1980.}{Deposit:: PHOSPHOROUS & POTASSIUM, NO., 112 MAR/APR 1981, PP. 18-21.}{Deposit:: DEPOSITS, FIFTH ED, LONDON, 1987, PP. 104-105.} |