000			004230000a22001690004500
245			_aWater supply and pollution control
100			_aClark, John W.
100			_aViessman, Warren
100			_aHammer, Mark J.
250			_a2nd ed.
260			_aScranton _bInternational Text Book Co. _c1971
300			_axiii, 661p. : ill.
020			_a070022338X
080			_a628.1 _bC6
041			_aEN
942			_cBK _01
999			_c100889 _d100889