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JSTOR, 1942
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Atlanta University, 1942
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University of California Press, 1924
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JSTOR, 1934
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University of Illinois Press, 1928
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JSTOR, 1927
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JSTOR, 1935
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JSTOR, 1934
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JSTOR, 1932
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Penn State Press (Project Muse), 1997
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Elsevier BV, 1999
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JSTOR, 1970
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College Park, MD : American Physical Society, 2019
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JSTOR, 1992
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The Wildlife Society, 1992
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Springer Science and Business Media LLC, 2022
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American Public Health Association, 2022
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Oxford University Press (OUP), 1931
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Oxford University Press (OUP), 2022
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Springer Science and Business Media LLC, 2022