RT Article T1 Anticipating the needs of the U. S. aged in the 21st century: dilemmas in epidemiology, gerontology, and public policy JF Social science & medicine VO 23 IS 11 A1 Lusky, Richard A. LA English YR 1986 UL https://krimdok.uni-tuebingen.de/Record/1642302333 K1 Altenpflege