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Paris: Michel, 1953
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Paris: Laurens, [ca. 1925]
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Paris: Laurens, [ca. 1922]
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University of California Press, 1916
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JSTOR, 1932
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JSTOR, 1940
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Oxford University Press (OUP), 2021
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American Astronomical Society, 2018
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American Astronomical Society, 2023
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American Astronomical Society, 2019
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American Astronomical Society, 2022