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Washington, DC: Smithsonian Institution, 1964
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Washington: Smithsonian Institution, 1954
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Boston, Mass.: Harvard Business Press, 2010
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St. Olaf Records, 220321
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Washington, DC, 1937 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2007
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University of California Press, 1956
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National Association of Biology Teachers, 1956
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American Association for the Advancement of Science, 1951
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JSTOR, 1950
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American Microscopical Society, 1950
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JSTOR, 1944
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American Microscopical Society, 1944
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The Science Press, 1939
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American Association for the Advancement of Science (AAAS), 1936
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The Science Press, 1936
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Elsevier BV, 2001
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JSTOR, 1951
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Wiley, 2009
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Wiley, 2008
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Elsevier BV, 2022