1. Webster's Unabridged International Dictionary,1942
2. Stamina: the thread of life;Thomas;J. chron. Dis.,1981
3. Social behavior and aging;Kahana,1982
4. The critical importance of appropriate methodology in the study of aging: the sample case of psychometric intelligence;Baltes,1979
5. The development of wisdom across the life span: a reexamination of an ancient topic;Clayton,1980