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2. Yamamoto and OshimaChem. Abs., 1932,26, 1295.
3. Russel and ToddJ.C.S., 1934, 218.
4. Shinoda and SatoChem. Abs., 1932,26, 1916.
5. Seshadri and co-workers Gupta and SeshadriProc. Ind. Acad. Sci., 1946,24A, 243; 1952,35A, 46 and 82.Ibid., Proc. Ind. Acad. Sci., 1953,37A, 611.