Erwin, J. 1986. Environments for captive propagation of primates: Interaction of social and physical factors. In: The Road to Self-Sustaining Populations . Benirschke, K. (ed), 297-305. Springer, New York, NY.

This report includes summaries of research projects (conducted by myself and my colleagues) that have dealt with such issues as social organization, social bonds, social roles, aggression, spatial change, social density, provision of cover, group formation, crowding, and risk of trauma.