Rao, M. Narayana. Waste water treatment / M. Narayana Rao, Amal K. Datta. - New Delhi : oxford and IBH Pub. Co. Pvt. ltd. , 1987. - 345 p. ; 25 cm. Includes index. ISBN: 8120402154 Subjects--Topical Terms: Sewage disposal |z Illinois. Dewey Class. No.: 363.7 / RAW