De held Hilfsbuch der Museumsarbeit / G.R. Hille Der vaderen erf / door J.J. Moerman ; aquarellen van J.W. Heijting Radio engineering / by Frederick Emmons Terman Principles of radar / by members of the staff of the Radar School Massachusetts Institute of Technology Measurements in radio engineering / by Frederick Emmons Terman Communication engineering / by William Littell Everitt army officer's guide / Paul D. Harkins and Philip Harkins Knowing and drawing trees / A. Hill : 1 Knowing and drawing trees / A. Hill : 2 Zeppelin in combat : a history of the German Naval Airship Division, 1912-1918 / by Douglas H. Robinson blue helmets under fire : fifty years of United Nations peacekeeping missions / Samuel M. Katz and Yves Debay ; editor: James R. Hill
