000 00505nam a22001697a 4500
005 20151026130322.0
008 091016t xxu||||| |||| 00| 0 eng d
020 _a81-219-1547-3
080 _a628.39
_bDUG
100 _aDuggal, K.N.
_97216
245 _aElements of environmental engineering
250 _a6th ed
260 _aNew Delhi
_bS.Chand & Co.
_c1996
_97217
300 _avi,504p.
653 _aEnvironmental Engineering
_aWater Supply
_aSewage Disposal
_aEnvironmental sanitation
942 _cBK
999 _c3127
_d3127