Não informado. (1963). Ionospheric predictions. U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory.
Citace podle Chicago (17th ed.)Não informado. Ionospheric Predictions. Washington: U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory, 1963.
Citace podle MLA (8th ed.)Não informado. Ionospheric Predictions. U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory, 1963.
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