Winthrop Chem. Co.
Patent: US2366189 , 1939 ;

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Lur'e
Zhurnal Obshchei Khimii, 1946 , vol. 16, p. 209,214
Chem.Abstr., 1947 , p. 413
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Basu; Das-Gupta
Journal of the Indian Chemical Society, 1941 , vol. 18, p. 167