Doraswamy, K.R. N1 and N4 substituted sulphanilamides Synthesis of N- substituted, (anils, ancyls, sulphony1, and azo)-derivatives of sulphathiazole and sulphapyridine by K.R. Doraswamy. - I.I.Sc. 1945 Dewey Class. No.: 547.065 / N45