Horizon magazine. Russia in revolution / by the editors of Horizon magazine. Author: E. M. Halliday. Consultant: Cyril E. Black. - New York : American Heritage, 1967. - 153 p. : ill., maps. - A Horizon caravel book . Includes bibliographical references. LCCN: 67026349 Subjects--Geographic Terms: Soviet Union--History--1917-1921, Revolution. Dewey Class. No.: 947.084