000 00306nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a628.5
100 _aWilliam P Cunningham
245 0 _aPrinciples of Environmental Science
250 _a4
260 _bTata Mcgraw Hill, New Delhi
_c2007
942 _cBK
999 _c17377
_d17377