Columbia subject headings:
Harvard subject headings:
Chile--Commercial policy--Congresses.
Chile--Foreign economic relations--North America--Congresses.
Environmental policy--Chile--Congresses
North America--Foreign economic relations--Chile--Congresses.
North American Free Trade Agreement--Congresses.
Princeton subject headings:
Chile--Commercial policy--Congresses.
Chile--Foreign economic relations--North America--Congresses.
Environmental policy--Chile--Congresses.
North America--Foreign economic relations--Chile--Congresses.