FR474799A - Procédé pour rendre susceptibles de servir d'engrais les roches phosphatées naturelles, et produit résultant de ce procédé
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Procédé pour rendre susceptibles de servir d'engrais les roches phosphatées naturelles, et produit résultant de ce procédé
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C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
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FR474799D1914-07-071914-07-07Procédé pour rendre susceptibles de servir d'engrais les roches phosphatées naturelles, et produit résultant de ce procédé
ExpiredFR474799A
(fr)