CASSELLA and Co Chem. Zentralbl., 1910 , vol. 81, # I p. 783 Full Text Show Details CASSELLA and Co Chem. Zentralbl., 1911 , vol. 82, # I p. 360 Full Text Show Details CASSELLA and Co. Patent: DE218371 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 10, p. 256,301 Full Text Show Details CASSELLA and Co. Patent: DE230119 ;