000 00460nam a2200097Ia 4500
008 120223s9999 xx 000 0 und d
082 _a595.7 OST
100 _aOster, George F.
245 _aCaste and ecology in the social insects
260 _b1978
_aPrinceton University Press
_c1921
999 _c152437
_d152437