Columbia subject headings:
Costs, Industrial--United States--Statistics--Periodicals.
Labor costs--United States--Statistics--Periodicals.
Manufacturing industries--United States--Costs--Statistics--Periodicals.
Harvard subject headings:
Costs, Industrial--United States--Statistics--Periodicals.
Labor costs--United States--Statistics--Periodicals.
Manufacturing industries--United States--Costs--Statistics--Periodicals.
Princeton subject headings:
Costs, Industrial--United States--Statistics--Periodicals.
Labor costs--United States--Statistics--Periodicals.
Manufacturing industries--United States--Costs--Statistics--Periodicals.
Periodicals.
Statistics.