00425nam a2200157Ia 4500008004100000082001600041100002100057245004400078260004900122300000800171650001800179650002400197653001200221653001200233700002200245170901s1978    xx            000 0 und d  a595.7bO77C  aOster, George F. 0aCaste And Ecology In The Social Insects  aNew JerseybPrinceton University Pressc1978  a352  aPure Sciences  aZoological sciences  aEcology  aInsects  aWilson, Edward O.