Columbia subject headings:
Harvard subject headings:
Bureaucracy--Soviet Union--History--20th century.
Communism--Soviet Union--History
Soviet Union--Politics and government--1917-1936.
Trotsky, Leon, 1879-1940
Princeton subject headings:
Bureaucracy--Soviet Union--History--20th century.
Communism--Soviet Union--History--20th century.
Soviet Union--Politics and government--1917-1936.
Trotsky, Leon, 1879-1940.