Columbia subject headings:
Cost and standard of living--United States.
Families--United States--Case studies.
Income--United States--Case studies.
Panel analysis.
Harvard subject headings:
Cost and standard of living--United States.
Families--United States.
Income--United States
Panel analysis.
Princeton subject headings:
Cost and standard of living--United States--Collected works.
Families--United States--Collected works.
Income--United States--Collected works.
Panel analysis--Collected works.