000			00473nam a2200145 4500
008			0 1985 0an 000 0ASI
020			_a0-07-049134-8
082			_a628 P546e
100			_aS. Peavy, Howard
245			_aEnvironmental engineering / Howard S. Peavy...[et al.]
260			_aSingapore : McGraw-Hill
300			_axiv, 699 p. / 22 cm.
650			_a1.WATER PURIFICATION PROCESSES IN NATURAL SYSTEMS
700			_aR. Rowe, Donald \ Tchobanoglous, George
999			_c19074 _d19074