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The International Academy of Astronautics. Nature 190, 495 (1961). https://doi.org/10.1038/190495a0
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DOI: https://doi.org/10.1038/190495a0
Nature volume 190, page 495 (1961)
The International Academy of Astronautics. Nature 190, 495 (1961). https://doi.org/10.1038/190495a0
Issue Date:
DOI: https://doi.org/10.1038/190495a0