000 00270nam a2200109Ia 4500
008 201009s9999 xx 000 0 und d
100 _aArvind Walia
245 0 _aEnvironmental Studies
260 _bNew Delhi , Kalyani Pub.
_c2016
300 _c 15.7+14
942 _cBK
999 _c16111
_d16111