Columbia subject headings:
Cost and standard of living--United States--Statistics--Periodicals.
United States--Economic conditions--Statistics--Periodicals.
Working class--United States--Economic conditions--Statistics--Periodicals.
Harvard subject headings:
Cost and standard of living--United States--Statistics--Periodicals.
United States--Economic conditions--Statistics--Periodicals.
Working class--United States--Economic conditions--Statistics--Periodicals.
Princeton subject headings:
Cost and standard of living--United States--Statistics--Periodicals.
Periodicals.
Statistics.
United States--Economic conditions--Statistics--Periodicals.
Working class--United States--Economic conditions--Statistics--Periodicals.