000 00272nam a2200121Ia 4500
041 _aEN
082 _a500
_bKUM
100 _aKumar, H.D .
245 0 _aSustainable : Human Ecology /H.D.Kumar.
260 _bNew Delhi : Affilated ,
_c2007
300 _a307
942 _cBK
999 _c27863
_d27863