title: Research on aging and human development: hard times, 1991.
authors: M P
authors: MP
authors: Lawton
mesh_terms: D000368:Aged / Q000502:physiology / Q000523:psychology; D000375:Aging / Q000502:physiology / Q000523:psychology; D006803:Human Development; D006801:Humans; D009316:National Institutes of Health (U.S.); D011640:Public Policy; D012106:Research; D014481:United States