Propagation of radio waves at frequencies below 300 kc/s proceedings of the seventh meeting of the AGARD Ionospheric Research Committee, Munich, 1962

by North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development. Avionics Panel. Ionospheric Research Committee.
Published: Published for and on behalf of Advisory Group for Aeronautical Research and Development. North Atlantic Treaty Organization by Pergamon Press; [distributed in the Western Hemisphere by Macmillan, New York], 1964