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Low- and very low-radiofrequency tables of ground wave parameters for the spherical earth theory the

Johler, J. Ralph, author.
Washington, D.C. : National Bureau of Standards, United States Department of Commerce, Office of Technical Services, [1959?] 1959

Low- and very low-radiofrequency tables of ground wave parameters for the spherical earth theory the

Johler, J. Ralph, author.
Washington, D.C. : National Bureau of Standards, United States Department of Commerce, Office of Technical Services, [1959?] 1959