000 00401nam a2200157Ia 4500
008 170207s9999 xx 000 0 und d
082 _aPG 574.5 VER-C
100 _aVerma, P S; Agarwal, V K
245 _aConcepts of ecology: Environmental biology
260 _bS Chand & Co. Ltd., New Delhi
260 _c1998
300 _a264
365 _b65
650 _aEcology; Biology
942 _cBOOKS
999 _c30168
_d30168