00454nam a2200181Ia 4500008004100000020001500041082001600056100001500072245004000087260004000127300000800167650001800175650001800193653001200211653001200223700001500235700002200250170901s1975    xx            000 0 und d  a0582606470  a574.5bE94E  aEwer, D.W. 0aEcological BiologybTeacher's Guide  aLondonbLongman Group Limitedc1975  a445  aLife sciences  aPure Sciences  aBiology  aEcology  aHall, J.B.  aMitchelmore, June