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1988-11-04
Compositions d'amidon methyle et leur utilisation comme agents de floculation pour les residus de bauxite
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1986-03-27
Procede de purification d'acide phosphorique par voie humide
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1987-06-12
Nouveaux sels ferriques complexes de l'acide a,a'-(1,2-ethanodihylodiimine)-bis (5-carboxy-2-hydroxybenzenoacetique), et leur procede de preparation
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1950-01-15
Procédé de préparation de sels de guanidine.
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1974-11-04
Procede de preparation de goethite et d'oxyde de fer magnetique