Communication engineering / by William Littell Everitt Formulas for stress and strain / Raymond J. Roark radio communication series Radio direction finders / by Donald S. Bond radiation laboratory series Radar aids to navigation / ed. by John S. Hall blue helmets under fire : fifty years of United Nations peacekeeping missions / Samuel M. Katz and Yves Debay ; editor: James R. Hill research study National security and individual freedom / H.D. Lasswell
