000 00285nam a2200121Ia 4500
008 230401s2011 xx 000 0 eng d
082 _a628
100 _aREDDY A N
245 0 _aENVIRONMENT SCIENCE & TECHNOLOGY
260 _bHYDERAD B S PUB.
_c2011
300 _a319
942 _2ddc
_cBTECH
999 _c458
_d458