Khan, S. Rehman Gilani, A. M. Waheed, Shahina Inayat, Asma Studies onLaboratory Scale Synthesis of 4, 4'-Diaminodiphenylurea and Preparation of Direct Dyes fromCompound - 319-323 p. Subjects--Topical Terms: 4,4'-DiaminodiphenylureaBenzidine SubstituteDirect Dye