Columbia subject headings:
Colombia--Foreign economic relations.
Foreign trade regulation--Colombia.
Foreign trade regulation--Mexico.
Foreign trade regulation--Venezuela.
Free trade--Colombia.
Free trade--Mexico.
Free trade--Venezuela.
Grupo de los Tres.
Latin America--Economic integration.
Mexico--Foreign economic relations.
Venezuela--Foreign economic relations.
Harvard subject headings:
Free trade--Colombia
Free trade--Mexico
Free trade--Venezuela.
Princeton subject headings:
Free trade--Colombia.
Free trade--Mexico.
Free trade--Venezuela.