Columbia subject headings:
Migration, Internal--Soviet Union.
Political persecution--Soviet Union--History.
Political persecution--Ukraine--History.
Soviet Union--Politics and government.
Ukraine--Emigration and immigration.
Harvard subject headings:
Forced migration--Soviet Union.
Forced migration--Ukraine--History--20th century.
Political persecution--Soviet Union--History.
Political persecution--Ukraine--History--20th century.
Soviet Union--Politics and government.
Princeton subject headings: