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Washington, DC, 1907 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1889 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1890 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Philadelphia, Pa.: University of Pennsylvania Press, 1986 ; 1986
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Washington, DC, 1905 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1893 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1900 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1891 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Washington, DC, 1898 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Austin: University of Texas Press, [2021] ; [Online-Ausgabe]
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Washington, DC, 1909 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2006
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Smithsonian Institution, 1941
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Smithsonian Institution, 1940
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American Association for the Advancement of Science (AAAS), 1935
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American Association for the Advancement of Science (AAAS), 1935
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The Science Press, 1935
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JSTOR, 1936
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American Microscopical Society, 1936
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JSTOR, 1934
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American Microscopical Society, 1934