Gunder, Berthold. The membrane-coupled activated sludge process in municipal wastewater treatment / Berthold Gunder. - Lancaster : Technomic Pub., 2001. - x, 186 p. : ill. ; 24 cm. Includes bibliographical references (p. 179-183) and index. ISBN: 1566769590 / RM361.60 LCCN: 00-108910 Subjects--Topical Terms: Sewage--Purification--Activated sludge process.Sewage--Purification--Filtration.Water--Purification--Membrane filtration.Membrane separation.