000 00368 a2200145 4500
020 _a9788120336919
082 _a628.39 MAS
245 _aIntroduction to environmental engineering and science
250 _a3/e
260 _aDelhi
_bPHI learning private limited
_c2008
300 _axii, 697p
700 _aWendell P. Ela
942 _cG
100 _aGilbert M. Masters
999 _c2674
_d2674