Russian foreign policy; essays in historical perspective. Edited by Ivo J. Lederer. Conference on a Century of Russian Foreign Policy (1961 : Yale University) Lederer, Ivo J., ed. Yale University. DK61 .C65 327.47 LER Bibliographical footnotes. New Haven : Yale University Press, 1962. 1962. 1962 Text xxiii, 620 p. eng Soviet Union Foreign relations Congresses.