Bayer and Co.
Patent: DE84505 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 4, p. 300
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Bayer and Co.
Patent: DE273341 , 1941 ;
Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 12, p. 436
Karatsu, Takashi; Arai, Tatsuo; Sakuragi, Hirochika; Tokumaru, Katsumi; Wirz, Jakob
Bulletin of the Chemical Society of Japan, 1994 , vol. 67, # 3 p. 891 - 894