000 00272nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSingh, P.P
245 0 _aEnviroment and Pollution Education
260 _aNew Delhi
_bDeep & Deep
_c2004
300 _a434p.
942 _cBK
999 _c11656
_d11656