National security concepts of states : Srilanka / Vernon L. B. Mendis. Mendis, Vernon L. B. National security. 355.03305493 MEN "UNIDIR, United Nations Institute for Disarmament Research, Geneva" Bibliography: p. 201-202. Includes bibliographical references. New York : United Nations, 1992. 1992. 1992 Text x, 205 p. ; eng