- Soviet Union--Politics and government--1917-1936 (3)
- Communism--Soviet Union (2)
- Stalin, Joseph, 1879-1953 (2)
- Trotsky, Leon, 1879-1940 (2)
- Prisons--Soviet Union (1)
- Socialism--Soviet Union (1)
- Soviet Union--Economic conditions--1917-1945 (1)
- Soviet Union--Economic policy--1928-1932 (1)
- Soviet Union--Economic policy--1933-1937 (1)
- Soviet Union--History--Allied intervention, 1918-1920--Sources (1)
- Soviet Union--History--Revolution, 1917-1921--Sources (1)
- Soviet Union--Social conditions (1)
- Soviet Union. Obʺedinennoe gosudarstvennoe politicheskoe upravlenie (1)