Columbia subject headings:
Council for Mutual Economic Assistance.
Developing countries--Foreign economic relations--Europe, Eastern.
Europe, Eastern--Foreign economic relations--Developing countries.
Produce trade--Developing countries.
Produce trade--Europe, Eastern.
Harvard subject headings:
Council for Mutual Economic Assistance--Developing countries.
Developing countries--Foreign economic relations--Europe, Eastern.
Europe, Eastern--Foreign economic relations--Developing countries.
Produce trade--Developing countries
Produce trade--Europe, Eastern.
Princeton subject headings: