000			00287nam a2200097 4500
999			_c336606 _d336606
082			_a551.9 _bMAN.P
100			_aManivasakam N.
245			_aPhysico-chemical Examination of water ,sewage and industrial effluents _cManivasakam N.
260			_aMeerut _c1992 _bPragati Prakashan
942			_cBK