Hoechster Farbw.
Patent: DE22545 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 1, p. 331
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Armstrong; Wynne
Chem. News J. Ind. Sci., 1890 , vol. 62, p. 163
Armstrong; Wynne
Chem. News J. Ind. Sci., 1890 , vol. 61, p. 165,93
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Dahl and Co.
Patent: DE41957 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 1, p. 407