000 00496nam a2200217 454500
001 057301
003 BD-ChCU
008 Eng
020 _a8121915473
040 _aDLC
_cDLC
_dBD-ChCU
082 0 0 _a628/D868e
100 1 _aDuggal, K.N :
_bx
245 1 0 _aElements of environmental engineering
_bx
250 _a5th
260 _aNew Delhi
_bS.Chand
_c1998
300 _a496
504 _ax
650 0 _aEnvironmental engineering
_bEngineering
700 1 _ax
942 _2ddc
_cBK
999 _c57301
_d57301