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FR480462D1915-11-051915-12-17Procédé pour la préparation de colorants orthooxydisazoiques secondaires susceptibles d'etre chromés sur fibre
ExpiredFR480462A
(fr)
Procédé pour la préparation de nouveaux colorants ortho-oxyazoiques, de composés chromés de ces derniers ainsi que l'application de tous ces corps en teinture