000 00321nam a2200133Ia 4500
008 221229s9999 xx 000 0 und d
100 _aDas, R.R.
245 0 _aEnvironmental Studies
250 _aIst
260 _aNew Delhi
_bParagon International Publishers
_c2006
300 _a413
650 _aEducation
942 _cBK
999 _c7429
_d7429