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Blue Hill Observatory of Harvard University. Nature 174, 500 (1954). https://doi.org/10.1038/174500a0
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DOI: https://doi.org/10.1038/174500a0
Nature volume 174, page 500 (1954)
Blue Hill Observatory of Harvard University. Nature 174, 500 (1954). https://doi.org/10.1038/174500a0
Issue Date:
DOI: https://doi.org/10.1038/174500a0