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Papers from the Arcetri Astrophysical Observatory. Nature 170, 1100 (1952). https://doi.org/10.1038/1701100a0
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DOI: https://doi.org/10.1038/1701100a0
Nature volume 170, page 1100 (1952)
Papers from the Arcetri Astrophysical Observatory. Nature 170, 1100 (1952). https://doi.org/10.1038/1701100a0
Issue Date:
DOI: https://doi.org/10.1038/1701100a0