Columbia subject headings:
Employees--United States--States--Statistics--Periodicals.
Industrial statistics--United States--Periodicals.
Manufacturing industries--United States--Employees--Statistics--Periodicals.
Manufacturing industries--United States--Statistics--Periodicals.
Harvard subject headings:
Employees--United States--States--Statistics--Periodicals.
Industries--United States--Statistics--Periodicals.
Manufacturing industries--United States--Employees--Statistics--Periodicals.
Manufacturing industries--United States--Statistics--Periodicals
Princeton subject headings:
Employees--United States--States--Statistics--Periodicals.
Industrial statistics--United States--Periodicals.
Manufacturing industries--United States--Employees--Statistics--Periodicals.
Manufacturing industries--United States--Statistics--Periodicals.
Periodicals.
Statistics.