000 nam a22 7a 4500
999 _c331388
_d331388
003 NUST
005 20170926131108.0
008 170926b xxu||||| |||| 00| 0 eng d
020 _a8121915473
040 _c0
082 _a628 DUG
100 _aDuggal,K.N
_95006
245 _aElements of Environmental Engineering
_ck.N.Duggal
260 _aNew Delhi
_bS.Chand & Company
_c2002
300 _a504p.
500 _aP.B
942 _2ddc
_cBK
_kIESE