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Washington, DC, 1923 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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American Astronomical Society, 1946
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American Astronomical Society, 1942
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American Astronomical Society, 1944
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American Astronomical Society, 1945
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American Astronomical Society, 1944
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American Astronomical Society, 1938
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American Astronomical Society, 1941
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American Astronomical Society, 1938
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American Astronomical Society, 1940
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American Astronomical Society, 1941
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American Astronomical Society, 1935
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American Astronomical Society, 1936
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American Astronomical Society, 1935
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American Astronomical Society, 1933
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IOP Publishing, 1932
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American Astronomical Society, 1933
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National Academy of Sciences of the United States of America, 1921
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Proceedings of the National Academy of Sciences, 1921
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Proceedings of the National Academy of Sciences, 1923