Droste, Ronald L. Theory and practice of water and wastewater treatment / Ronald L. Droste - New York : John Wiley & Sons, Inc., 1997. - xiv, 800 pages : 26 cm. Includes index ISBN: 0471124443 Subjects--Topical Terms: Water--PurificationSewage--Purification LC Class. No.: TD 430 D76 1997 CIRC