Investigation of Communist Takeover and Occupation of Poland, Lithuania, and Slovakia. <Part 4>, Sixth Interim Report hearings before the United States House Select Committee To Investigate Communist Aggression and the Forced Incorporation of the Baltic States into the Soviet Union, Subcommittee on Poland, Lithuania, and Slovakia, Eighty-Third Congress, second session, on Sept. 30, Oct. 1, 21, 22, 1954