Columbia subject headings:
Commercial products--Classification--Periodicals.
Commercial products--United States--Statistics--Periodicals.
United States--Commerce--Periodicals.
Harvard subject headings:
Commercial products--Classification--Periodicals.
Commercial products--United States--Statistics--Periodicals
United States--Commerce--Periodicals.
Princeton subject headings:
Commercial products--Classification--Periodicals.
Commercial products--United States--Statistics--Periodicals.
Periodicals.
Statistics.
United States--Commerce--Periodicals.