00678cam a2200229 7i4500 0000008193 20080520090000.0 0 a20080520 09:32 080520 0070015392 NM NM TD430 .A6 1971 American Water Works Association Water quality and treatment : a handbook of public water supplies. 3rd. ed. New York: McGraw-Hill, 1971. xii, 654p.: ill.; 24cm. Includes bibliographical references Water -- Purification Water-supply -- United States 0000002294 Book Open Shelf HQ Library