Columbia subject headings:
Comparative advantage (International trade)--Congresses.
Environmental policy--Congresses.
Environmental protection--Economic aspects--Congresses.
International business enterprises--Congresses.
Harvard subject headings:
Comparative advantage (International trade)--Congresses.
Competition, International--Congresses
Environmental policy--Congresses
Environmental policy--Economic aspects--Congresses
Environmental protection--Economic aspects--Congresses
International business enterprises--Congresses
Princeton subject headings:
Competition, International--Congresses.
Environmental policy--Economic aspects--Congresses.