000 00456nam a2200181Ia 4500
008 180424s9999 xx 000 0 und d
020 _a8120319303
084 _a628.1 V1
100 _a"Venugopala Rao, P"
245 0 _aTextbook of Environmental Engineering
250 _a\\200300ENGGPSX
260 _aPhi Learning Pvt Ltd
260 _b2003
260 _cNew Delhi
300 _a268p.
500 _aincludes index and biblioraphy
942 _cBK
999 _c67749
_d67749