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A Large Sunspot Group. Nature 183, 152 (1959). https://doi.org/10.1038/183152a0
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DOI: https://doi.org/10.1038/183152a0
Nature volume 183, page 152 (1959)
A Large Sunspot Group. Nature 183, 152 (1959). https://doi.org/10.1038/183152a0
Issue Date:
DOI: https://doi.org/10.1038/183152a0