000 00464nam a2200193Ia 4500
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020 _a81-219-1547-3
041 _aENGLISH
082 _A628 Q4
100 _aDuggal K N
245 0 _aElements of Environmental Engineering
250 _a1sy
260 _c2014
_bs chand publi
500 _aTRANSFERED
650 _aEnvironment Engg
_bMechanical
942 _cBK
999 _c206714
_d206714