Title: Scope of Soviet activity in the United States
Subtitle: Hearing before the Subcommittee to Investigate the Administration of the Internal Security Act and Other Internal Security Laws of the Committee on the Judiciary, United States Senate, Eighty-fourth Congress, second session[-Eighty-fifth Congress, first session] ...
Subjects: Subversive activities, Communism, Russian Espionage, Internal security, Soviet Espionage
Places: United States
Time periods: 1917-