Treadgold, Danald W. Twentieth century Russia / Danald W. Treadgold - 6th ed. - Boulder : Westview, c1987. - xvi,580 p. : 25 cm. ISBN: 0813305063 LCCN: Subjects--Topical Terms: Soviet_union--Soviet_unionHistory20th century LC Class. No.: DK246 / .T65 1987 Dewey Class. No.: 947.084 / T784t