Propagation of Radio Waves at Frequencies below 300 kc/s
Edited by W. T. Blackband. (Proceedings of the Seventh Meeting of the AGARD Ionospheric Research Committee, Munich 1962. AGARDograph No. 74.) Pp. xii + 478. (London and New York: Pergamon Press, 1964. Published for and on behalf of Advisory Group for Aeronautical Research and Development, North Atlantic Treaty Organization.) 140s. net.
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RATCLIFFE, J. Longest Radio Waves. Nature 203, 1209 (1964). https://doi.org/10.1038/2031209a0
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DOI: https://doi.org/10.1038/2031209a0