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University of London Observatory. Nature 194, 1223 (1962). https://doi.org/10.1038/1941223c0
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DOI: https://doi.org/10.1038/1941223c0
Nature volume 194, page 1223 (1962)
University of London Observatory. Nature 194, 1223 (1962). https://doi.org/10.1038/1941223c0
Issue Date:
DOI: https://doi.org/10.1038/1941223c0