Columbia subject headings:
Economic assistance, American--Environmental aspects--Developing countries.
Economic assistance--Environmental aspects--Developing countries.
Economic assistance--Environmental aspects--United States.
Environmental policy--Developing countries.
Foreign trade promotion--United States.
International trade--Environmental aspects.
Technical assistance, American--Environmental aspects--Developing countries.
Harvard subject headings:
Economic assistance, American--Environmental aspects--Developing countries.
Economic assistance--Environmental aspects.
Environmental policy--Developing countries
Foreign trade promotion--United States.
International trade--Environmental aspects
Technical assistance, American--Environmental aspects--Developing countries.
Princeton subject headings:
Economic assistance, American--Environmental aspects--Developing countries.
Foreign trade promotion--United States.
Technical assistance, American--Environmental aspects--Developing countries.