Columbia subject headings:
Colombia--Commerce--Periodicals.
Colombia--Commercial policy--Periodicals.
Foreign trade regulation--Colombia--Periodicals.
Harvard subject headings:
Colombia--Commerce--Periodicals.
Colombia--Commercial policy--Periodicals.
Foreign trade regulation--Colombia--Periodicals.
Princeton subject headings:
Colombia--Commerce--Periodicals.
Colombia--Commercial policy--Periodicals.
Foreign trade regulation--Colombia--Periodicals.
Periodicals.