000 00346nam a2200133Ia 4500
008 250409s9999 xx 000 0 und d
020 _a81-219-0859-0
082 _a577
_bVER
100 _aVerma,P.S
245 0 _aEnvironmental biology:principles of ecology
260 _aNew Delhi
_bS.Chand
_c2003
365 _a110
700 _a Agrawal,V.K
999 _c249992
_d249992