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Washington, DC, 1919 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1911 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1916 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1914 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1921 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1917 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1914 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1918 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1908 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1911 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1910 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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Washington, DC, 1946 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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American Association for the Advancement of Science (AAAS), 1917
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The Science Press, 1917
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American Association for the Advancement of Science (AAAS), 1915
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The Science Press, 1915
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American Association for the Advancement of Science (AAAS), 1915
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The Science Press, 1915
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University of Chicago Press, 1911
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University of Chicago Press, 1911