00277nam a2200097Ia 4500008004100000082001700041100002700058245004600085260004100131300000700172140113s9999    xx            000 0 und d  a591.557   L6  a"Hassell, Michael. P."  aThe Dynamics of compitition and predation  a1976bEdward Arnold(Pub)Ltd.cLondon  a68