Columbia subject headings:
Harvard subject headings:
Bukharin, Nikolaĭ, 1888-1938.
Bukharin, Nikolaĭ, 1888-1938.
Soviet Union--Politics and government--1917-1936.
Stalin, Joseph, 1878-1953
Stalin, Joseph, 1878-1953.
Trotsky, Leon, 1879-1940
Princeton subject headings:
Bukharin, Nikolaĭ, 1888-1938.
Soviet Union--Politics and government--1917-1936.
Stalin, Joseph, 1878-1953.
Trotsky, Leon, 1879-1940.