Past and future trends in gerontology.
D000328:Adult; D000368:Aged; D000375:Aging; D001290:Attitude; D005060:Europe; D005853:Geriatrics / Q000266:history; D049673:History, 20th Century; D006801:Humans; D007360:Intelligence; D010684:Philosophy; D012922:Social Change; D012945:Social Values; D014481:United States