Treadgold, Donald W. Twentieth century Russia / Donald W. Treadgold - 7th ed. - Boulder : Westview Press, c1990. - xvi,593 p. : 23 cm. Includes index. ISBN: 0813310113 LCCN: Subjects--Topical Terms: Soviet_union--Soviet_unionHistory20th century LC Class. No.: DK246 / .T65 1990 Dewey Class. No.: 947.084 / T784t