000 00440nam a2200181Ia 4500
008 180424s9999 xx 000 0 und d
020 _a8188429821
084 _a574.5 K33
100 _a"Kavitha, Helen P"
245 0 _aPrinciples of Environmental Sciences
250 _a\\201300ENGGPSX
260 _aScitech
260 _b2013
260 _cChennai
300 _a280p
500 _aincludes index and biblioraphy
942 _cBK
999 _c98381
_d98381