| Reference | {Production:: INTERNATIONAL FERTILIZER INDUSTRY ASSOCIATION. PHOSPHORIC}{Production:: ACID, TRIPLE SUPERPHOSPHATE AND AMMONIUM PHOSPATE PLANTS}{Production:: 1988 PLANTS. AUGUST 1988, 39PP.}{Production:: BRITISH SULPHUR CORPORATION. WORLD FERILIZER ATLAS, EIGHTH}{Production:: ED. APRIL 1987, 121 PP.} |