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A Big Sunspot. Nature 165, 301 (1950). https://doi.org/10.1038/165301a0
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DOI: https://doi.org/10.1038/165301a0
Nature volume 165, page 301 (1950)
A Big Sunspot. Nature 165, 301 (1950). https://doi.org/10.1038/165301a0
Issue Date:
DOI: https://doi.org/10.1038/165301a0