TY - BOOK AU - Smith, Ernest K. TI - Electromagnetic probing of the upper atmosphere U1 - 551.51/S61 Ej.1 PY - 1970/// CY - Oxford PB - Pergamon Press, Inc. KW - PROPAGACIÓN ONDAS RADIO KW - ELECTROMAGNETISMO KW - ATMÓSFERA N1 - 1. Electromagnetic probing of the upper atmosphere -- 2. A comparative study of ionospheric measurement techniques -- 3. Ionospheric probing using pulsed radio waves at oblique incidence -- 4. Ionospheric probing using vertical incidence sounding techniques -- 5. Ionospheric probing with long wavelength radio waves ER -