000 00301nam a2200121Ia 4500
008 220821s2009 xx 000 0 eng d
100 _aRAO, P. VENU GOPALA
245 0 _aPRINCIPLES OF ENVIRONMENTAL SCIENCE & ENGINEERING
250 _a1ST
260 _bPHI
_c2009
300 _a276
942 _2ddc
_cBTECH
999 _c1842
_d1842