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C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
C05B11/02—Pretreatment
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FR600734D1924-10-111924-10-11Procédé d'enrichissement des phosphates naturels
ExpiredFR600734A
(fr)