Columbia subject headings:
Communism--Forecasting.
Communism.
Communist countries--Economic conditions.
Communist countries--Politics and government.
Harvard subject headings:
Communism--Forecasting.
Communism.
Communist countries--Economic conditions.
Communist countries--Politics and government.
Princeton subject headings:
Communism--Forecasting.
Communism.
Communist countries--Economic conditions.
Communist countries--Politics and government.