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  1. 1

    Sun about to enter 'solar maximum' phase, shows sunspots by Abarca, Charie Mae F.

    Published in Manila Bulletin (2022)
    Article

    Sun about to enter 'solar maximum' phase, shows sunspots
  2. 2

    The depths of the universe by Hale, George Ellery 1868-1938

    Published 1924
    Book

    The depths of the universe

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