000			004110000a22001570004500
245			_aBiological wastewater treatment systems
100			_aHoran, N.J.
260			_aChichester _bJohn Wiley _c1990
300			_aviii, 310p. : ill.
020			_a0471922587
080			_a628.35 _bH6
650			_aWASTEWATER TREATMENT
650			_aSEWAGE TREATMENT-BIOLOGICAL TREATMENT
041			_aEN
942			_cBK _02
999			_c64019 _d64019