1. The Assessment of Biological Age in Man;Bourlière,1970
2. Cultural values and dependency in later life;Clark,1972
3. Aging in Culture and Society: Comparative Viewpoints and Strategies,1980
4. The Role of the Aged in Primitive Society;Simmons,1945
5. Unusual Longevity: the common denominators;Leaf;Hosp. Prac.,1973