Columbia subject headings:
Older men--Employment--United States.
Older men--United States--Economic conditions.
Older women--Employment--United States.
Older women--United States--Economic conditions.
Harvard subject headings:
Princeton subject headings:
Older men--Employment--United States.
Older men--United States--Economic conditions.
Older women--Employment--United States.
Older women--United States--Economic conditions.