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C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
C05B1/02—Superphosphates
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FR729233D1932-01-051932-01-05
Method and apparatus for the manufacture of fertilizers containing phosphoric acid
ExpiredFR729233A
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