Columbia subject headings:
Social surveys--United States--Longitudinal studies--Congresses.
Women--Employment--United States--Longitudinal studies--Congresses.
Women--United States--Social conditions--Longitudinal studies--Congresses.
Harvard subject headings:
Married women--Employment--United States--Longitudinal studies--Congresses.
Middle-aged women--Employment--United States.
Mothers--Employment--United States--Longitudinal studies--Congresses.
Social surveys--United States--Longitudinal studies--Congresses.
Women--Employment--United States--Longitudinal studies--Congresses.
Women--United States--Social conditions--Longitudinal studies--Congresses.
Princeton subject headings: