Duggal,K.N, Elements of Environmental Engineering by K.N. Duggal - 1st ed. / Revised and Reprinted. - New Delhi S. Chand 2010 - xvii;440p.: 24cm. ISBN: 8121915473 Subjects--Topical Terms: Sanitary & municipal engineeringCivil EngineeringElements of Environmental Engineering Dewey Class. No.: 628