000 00401nam a22001577a 4500
020 _a8121927927
100 _aK.N. Duggal
245 _aElements of Environmental Engineering
250 _aRevised Edition
264 _aNew Delhi, India.
_bS.Chand & Company Ltd.
_c2007
300 _axi,440pgs
_bill.
650 0 _aTechnology
650 0 _aEnvironmental
650 0 _aEngineering
942 _2lcc
_cBK
999 _c13651
_d13651