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Testing of ceramic materials; chemical analysis of refractories mainly consisting of alumina and silica, determination of total iron oxides estimated as ferric oxide
German title
Prüfung keramischer Roh- und Werkstoffe; Chemische Analyse von feuerfesten Stoffen mit den Hauptbestandteilen Aluminiumoxid und Silicium(IV)-oxid, Bestimmung von Gesamteisenoxid, berechnet als Eisen(III)-oxid