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Washington, DC, 1944 ; Online-Ausg.: Chester, Vt: NewsBank, inc, 2008
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Open Library of the Humanities, 1985
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SAGE Publications, 1981
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American Association for the Advancement of Science (AAAS), 1979
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American Association for the Advancement of Science, 1951
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University of Chicago Press, 1948
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The Williams and Wilkins Press, 1949
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The University of Chicago Press, 1948
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SAGE Publications, 1943
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American Sociological Society, 1943
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The Williams and Wilkins Press, 1943
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The Macmillan Company, 1943
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University of Chicago Press, 1942
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University of Chicago Press, 1942
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SAGE Publications, 1941
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American Association for the Advancement of Science, 1979
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Sigma Xi Scientific Research Society, 1979
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Sigma Xi Scientific Research Society, 1979
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JSTOR, 1943
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Sigma Xi Scientific Research Society, 1981