000 00333nam a2200133Ia 4500
005 20260413100912.0
008 230516s9999||||xx |||||||||||||| ||und||
100 _aRao CS
245 0 _aEnvironmental pollution control Engg.
260 _bN. Delhi, New age Ltd.
_c1991
300 _a431
942 _cGB
999 _c5370
_d5370