000 00376nam a2200157Ia 4500
005 20240508194025.0
008 221007s9999 xx 000 0 und d
082 _a628
100 _aDuggal K.N
245 0 _aElements of Environmental Engineering
250 _a1st
260 _aS.Chand, New Delhi
_bS.Chand, New Delhi
_c2012
300 _a451
942 _cBK
942 _n0
999 _c3098
_d3098