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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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FR512788A1920-03-301920-03-30
Preparation of concentrated and dry superphosphates using oleum
ExpiredFR512788A
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