Columbia subject headings:
Commercial policy--Environmental aspects--Periodicals.
Economic development--Environmental aspects--Periodicals.
Environmental policy--Economic aspects--Periodicals.
International trade--Environmental aspects--Periodicals.
Harvard subject headings:
Commercial policy--Environmental aspects--Periodicals.
Economic development--Environmental aspects--Periodicals
Environmental policy--Economic aspects--Periodicals.
International trade--Environmental aspects--Periodicals.
Princeton subject headings:
Commercial policy--Environmental aspects--Periodicals.
Economic development--Environmental aspects--Periodicals.
Environmental policy--Economic aspects--Periodicals.
International trade--Environmental aspects--Periodicals.
Periodicals.