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- [3] IR STUDY OF FINELY DIVIDED MAGNETITES SUBSTITUTED WITH ALUMINUM AND CHROMIUM - REACTIVITY IN PRESENCE OF OXYGEN BULLETIN DE LA SOCIETE CHIMIQUE DE FRANCE PARTIE I-PHYSICOCHIMIE DES SYSTEMES LIQUIDES ELECTROCHIMIE CATALYSE GENIE CHIMIQUE, 1978, (5-6): : 272 - 273