Cao, Ye Shi Biological phosphorus removal activated sludge process in warm climates / Cao Ye Shi - 1st ed. - New York : IWA Publishing, 2011 - xviii, 132 p. : ill. (some col.) ; 25 cm. Includes bibliographical references and index ISBN: 9781843393818 1843393816 Subjects--Topical Terms: Sewage--Purification--Phosphate removalSewage--Purification--Biological treatment