000 00347nam a2200133Ia 4500
008 250409s9999 xx 000 0 und d
020 _a8121908590
082 _a628
_bVER
100 _aVerma,P.S.
245 0 _aEnvironmental biology (Priciples of ecology)
260 _aNew Delhi
_bS.Chand & Co.
_c2000
365 _a110
700 _aAgrawal,V.K.
999 _c247557
_d247557