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[S.l.]: SSRN, 2011
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University of California Agriculture and Natural Resources (UC ANR), 2012
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Informa UK Limited, 2002
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University of Chicago Press, 1989
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American Association for the Advancement of Science (AAAS), 1988
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American Association for the Advancement of Science (AAAS), 1988
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The American Association for the Advancement of Science, 1988
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University of Chicago Press, 1989
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University of Chicago Press, 1987
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University of Chicago Press, 1984
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JSTOR, 1978
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JSTOR, 1974
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JSTOR, 1975
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JSTOR, 1984
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JSTOR, 1983
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JSTOR, 1981
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Informa UK Limited, 1996
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JSTOR, 1990
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University of Alberta Libraries, 1988
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JSTOR, 1983