1. Sex attraction in Andrena flavipes Panzer, with some observations on nest-site restriction;Butler,1965
2. The social organization of the bumblebee colony;Free,1961
3. Über die Futterweitergabe zwischen Angehörigen verschiedener Waldameisenstaaten;Lange;Z. Tierpsychol.,1960
4. Observations on the behavior of a burrowing bee (Amegilla) near Brisbane, Queensland;Michener;Qd Nat.,1960
5. Chemical communication in the social insects;Wilson;Science, N.Y.,1965