000			00304nam a22001337a 4500
999			_c2416 _d2416
020			_a0132056267
082			_a628.1
100			_aMark J Hammer & Mark J Hammer
245			_aWater and wastewater technology
250			_a3rd
260			_aNew Delhi _bPrentice hall _c1996
300			_a519
942			_cBK