Karia, G L Wastewater treatment : concepts and design approach G. L. Karia, R. A. Christian - New Delhi PHI Learning 2009 - xiii, 365 p. : ill. ; 24 cm Includes index ISBN: 9788120328600 Subjects--Topical Terms: Sewage--PurificationSewage--Purification--Data processing Dewey Class. No.: 628.3 KAR