000 00285nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aDubey (RM) Ed.
245 0 _aHuman Ecology and Environmental Education V.1
260 _bChugh
260 _c1992
365 _b400
942 _cBK
999 _c217414
_d217414