1. The evolution of social behavior;Alexander;Annual Review of Ecology and Systematics,1974
2. Group selection, altruism, and the levels of organization of life;Alexander;Annual Review of Ecology and Systematics,1978
3. Adaptation in cultural evolution;Alland,1970
4. Adaptation;Alland;Annual Review of Anthropology,1975
5. The concept of adaptation in biological and cultural evolution;Alland,1973