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Earth Satellites: Satellites Applied. Nature 221, 707–708 (1969). https://doi.org/10.1038/221707b0
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DOI: https://doi.org/10.1038/221707b0
Nature volume 221, pages 707–708 (1969)
Earth Satellites: Satellites Applied. Nature 221, 707–708 (1969). https://doi.org/10.1038/221707b0
Issue Date:
DOI: https://doi.org/10.1038/221707b0