参考文献

Bayer and Co. Patent: DE205881 ; Fortschr. Teerfarbenfabr. Verw. Industriezweige, vol. 9, p. 716 Full Text Show Details Bayer and Co Chem. Zentralbl., 1909 , vol. 80, # I p. 881 Full Text Show Details Bayer and Co. Patent: DE205881 ;