000 00322nam a2200121Ia 4500
001 167559
008 170722s9999 xx 000 0 und d
100 _aPatnaik, Prabhat
245 _aTextbook of environmental science /
260 _aNew Delhi :
_bWisdom Press ,
_c2011.
923 _d20101125
_nMBC-1619/1
942 _cGEN
999 _c143540
_d143540