Columbia subject headings:
Bulgaria--Politics and government--1944-
Hungary--Politics and government--1945-1989.
Romania--Politics and government--1944-1989.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Influence.
World War, 1939-1945--Peace.
Harvard subject headings:
Bulgaria--Politics and government--1944-1990.
Hungary--Politics and government--1945-1989
Romania--Politics and government--1944-1989.
World War, 1939-1945--Diplomatic history.
World War, 1939-1945--Influence.
World War, 1939-1945--Peace.
Princeton subject headings: