Since 1950, there has been a sharp increase in interest among comparative anatomists, physiologists, biochemists, ecologists, and behavioral scientists in resea

A field study of the behavior and social relations of howling monkeys (1934); Behavior of red spider monkeys in Panama (1935); An observational study of two cap

This international symposium contains 18 papers contributed by primatologists from both Japan and the United States. In them are many definitions of problems as