Wastewater treatment technology / Paul N. Cheremisinoff, editor, in collaboration with W. Banning ... [et al]. - Vol. 3 - Houston, Tex. : Gulf Pub. Co., c1989. - xi, 684 p. : ill. ; 24 cm. - Encyclopedia of environmental control technology ; v. 3 . Includes bibliographical references and indexes. ISBN: 0872012476 LCCN: 89001937 Subjects--Topical Terms: Sewage--Purification--Activated sludge process.Groundwater--Pollution. LC Class. No.: TD191.5 TD756 / .enc 1989 Dewey Class. No.: 628.5 s 628.3154