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Radiation Patterns in the Lower Ionosphere and Fresnel Zones for Elevated Antennas Over a Spherical Earth

R. G. MerrillW. V. Mansfield

出版	U.S. Government Printing Office, 1962
URL	http://books.google.com.hk/books?id=4xE3cgAACAAJ&hl=&source=gbs_api