000 00279nam a2200121Ia 4500
008 170207s9999 xx 000 0 und d
082 _aPG 574.5 BAL-C
100 _aBali, Kotpal
245 _aConcept of Ecology
300 _a261
650 _aEcology; Biology
942 _cBOOKS
999 _c25538
_d25538