Vigneswaran, Saravanamuthu, 1952- Water treatment processes : simple options / S. Vigneswaran, C. Visvanathan. - Boca Raton : CRC Press, c1995. - 215 p. : ill. ; 25 cm. - New directions in civil engineering . H.B Includes bibliographical references and index. ISBN: 0849382831 (acidfree paper) LCCN: 94047108 Subjects--Topical Terms: Water--Purification.Appropriate technology. LC Class. No.: TD430 / .V54 1995 Dewey Class. No.: 628.162 VIG