| Reference | {Deposit:: INTERNATIONAL FERTILIZER INDUSTRY ASSOCIATION. PHOSPHORIC}{Deposit:: ACID, TRIPLE SUPERPHOSPHATE AND AMMONIUM PHOSPHATE PLANTS}{Deposit:: 1988 SURVEY. AUGUST 1988, 39PP.}{Deposit:: BRITISH SULPHUR CORPORATION. WORLD FERTILIZER ATLAS, EIGHTH}{Deposit:: ED. APRIL 1987, 121PP.}{Deposit:: BLUE, JOHNSON & ASSOC., PHOSPHATES, PHOSACID & GRANULATION,}{Deposit:: WORLD PLANT DATABASE & OUTLOOK, 3RD ED., SEPT. 1992,}{Deposit:: PP. 36-37.} |