Columbia subject headings:
Economics--Periodicals.
Law--United States--Periodicals.
Licenses--United States--Periodicals.
Trade regulation--United States--Periodicals.
Harvard subject headings:
Economics--Periodicals
Licenses--United States--Periodicals.
Trade regulation--United States--Periodicals
Princeton subject headings:
Economics--Periodicals.
Licenses--United States--Periodicals.
Periodicals.
Trade regulation--United States--Periodicals.