Columbia subject headings:
Harvard subject headings:
Balance of trade--Developing countries.
Free trade--Developing countries
Produce trade--Developing countries
Produce trade--Government policy
Protectionism--Developing countries.
Protectionism.
Tariff on farm produce.
Princeton subject headings:
Balance of trade--Developing countries.
Free trade--Developing countries.
Produce trade--Developing countries.
Produce trade--Government policy.
Tariff on farm produce.