Book Review : The Logic of Images in International Relations. By Robert Jervis. Princeton University Press. London : Oxford University Press. 1970.  4.00. xi+281 pages. Index. Games Nations Play. By John W. Spanier. London: Thomas Nelson and Sons Ltd., 1972.  4.50. xii+457 pages. Bibliography. Index. An Introduction to International Relations. By P. A. Reynolds. London: Longmans, 1971.  1.25 v+275 pages. Further Reading. Index. Foreign Policy and the Political Process. Bv William Wallace. London: Macmillan, 1971. 60p. 80 pages. Bibliography