000 00385nam a2200145Ia 4500
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041 _aENG
082 _a621
_bCH-E
100 _aChatwal,G.R
245 0 _aEncyclopaedia of environmental pollution & its control
250 _a5th Ed.
260 _c1989
_aNew Delhi
_bAnmol Publication(P) Ltd.
650 _aCivil Engineering
942 _cBK
999 _c603
_d603