000 00437nam a2200181Ia 4500
008 180424s9999 xx 000 0 und d
020 _a8121915473
084 _a628.1 D3
100 _a"Duggal, K N"
245 0 _aElements of Environmental Engineering
250 _a\\200000ENGGPSX
260 _aS Chand
260 _b2000
260 _cNew Delhi
300 _a496p.
500 _aincludes index and biblioraphy
942 _cBK
999 _c65085
_d65085