Columbia subject headings:
Bukharin, Nikolaĭ, 1888-1938--Trials, litigation, etc.
Trials (Political crimes and offenses)--Soviet Union.
Trotsky, Leon, 1879-1940.
Harvard subject headings:
Bukharin, Nikolaĭ, 1888-1938--Trials, litigation, etc.
Courts-martial and courts of inquiry--Soviet Union.
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Purges.
Trials (Political crimes and offenses)--Soviet Union
Princeton subject headings: