- Ethnic relations--Soviet Union (1)
- Kievan Rus--History (1)
- Minorities--Goverment policy--Soviet Union (1)
- Minorities--Government policy--Soviet Union--History--Sources (1)
- Ruthenia (Czechoslovakia)--History--20th century (1)
- Soviet Union--Ethnic relations--History--Sources (1)
- Soviet Union--Politics and government--1917-1936 (1)
- Soviet Union--Politics and government--1917-1936--Sources (1)
- Ukraine--History (1)
- Zakarpatsʹka oblastʹ (Ukraine)--History--20th century (1)