Ulam, Adam B. The unfinished revolution : Marxism and communism in the modern world / Adam B. Ulam - Boulder : Westview, c1979. - xiii, 287 p. : 24 cm. Includes index. ISBN: 0891584854 LCCN: Subjects--Topical Terms: SocialismHistory CommunismHistory LC Class. No.: HX37 / .U42 1979 Dewey Class. No.: 335.009 / U36u