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The Union Observatory, Johannesburg, 1953–55. Nature 179, 851 (1957). https://doi.org/10.1038/179851d0
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DOI: https://doi.org/10.1038/179851d0
Nature volume 179, page 851 (1957)
The Union Observatory, Johannesburg, 1953–55. Nature 179, 851 (1957). https://doi.org/10.1038/179851d0
Issue Date:
DOI: https://doi.org/10.1038/179851d0