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Patent: DE475687 ;
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German Dyestuffs and Dyestuff Intermediates
Fiat Final Report Nr. 1313, Bd. II <London 1948>, S. 153
I. G. Farbenind.
Patent: DE475687 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 16, p. 1341,1344
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I. G. Farbenind.
Patent: DE477394 ;