Who are the people comprising the Communist movement in Eastern Europe? What is their motivation in joining the party? In a comparative analysis of the eight East European Communist parties--Polish, Czech, Magyar, Romanian, Bulgarian, Yugoslav, Greek, and Albanian--R. V. Burks offers precise knowledge about Communism's adherents. The author conducted interviews with repentant Communists held in Greek prisons, with exiled members of the anti-Communist opposition, and with active members of the party; he also made a critical analysis of election returns and of original sources in a dozen...