参考文献
Taeubel; Walder
Patent: DE123375 ;
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Taeuber; Walder
Chemische Berichte, 1900 , vol. 33, p. 2118
Chem. Zentralbl., 1901 , vol. 72, # II p. 670
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Bertels
Chemische Berichte, 1904 , vol. 37, p. 2277
Chem. Zentralbl., 1901 , vol. 72, # II p. 670