000 00259nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aGoyal, M.K.
245 0 _aEssential Environment
260 _aAgra
_bR.S.A.Internation
_c2010
300 _a351
942 _cBK
999 _c12629
_d12629