Columbia subject headings:
Communism.
Developing countries.
Labor movement.
Newly independent states--Politics and government.
Soviet Union--History--Revolution, 1917-1921--Influence.
Working class.
World politics--1945-1989.
Harvard subject headings:
Communism
Developing countries.
Labor
Newly independent states.
Working class
Princeton subject headings:
Communism.
Developing countries
Newly independent states.
Working class.