Geographical research and gerontology: an overview.
D000368:Aged; D003710:Demography; D005006:Ethnicity; D006299:Health Services for the Aged; D006707:Homes for the Aged; D006801:Humans; D009656:North America; D011640:Public Policy; D012106:Research; D012931:Social Environment; D014171:Transients and Migrants; D014505:Urban Population