Annals of the International Geophysical Year v. XXXVII : whistlers and audio-frequency emissions; monthly summaries of whistlers and emissions for the period July 1957-December 1958. edited by M. G. Morgan - Oxford Pergamon Press 1965 - 300p. - Annals of the International Geophysical Year .

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International Geophysical Year

550.38"1957-58" / MOR