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Chicago: Callaghan, 1923 ; Farmington Hills, Mich: Thomson Gale
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St. Paul [Minn.]: West Pub. Co, 1922 ; Farmington Hills, Mich: Thomson Gale
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JSTOR, 1928
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JSTOR, 1944
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JSTOR, 1932
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JSTOR, 1929
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JSTOR, 1929
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JSTOR, 1922
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JSTOR, 1924
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JSTOR, 1924
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JSTOR, 1924
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JSTOR, 1937
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JSTOR, 1922
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JSTOR, 1923
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JSTOR, 1922
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Springer Science and Business Media LLC, 1995
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JSTOR, 1928
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American Astronomical Society, 2022
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American Astronomical Society, 2019
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EDP Sciences, 2020