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EP, 180424
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Challenge Classics, 101007
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CNM, 130204
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Project MUSE, 2023
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Project MUSE, 2023
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Project MUSE, 2017
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SAGE Publications, 1960
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Wiley, 2011
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Public Library of Science (PLoS), 2004
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Elsevier BV, 2001
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Elsevier BV, 2010
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Elsevier BV, 1984
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Wiley, 2020
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Ovid Technologies (Wolters Kluwer Health), 2019
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Ovid Technologies (Wolters Kluwer Health), 2014
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Wiley, 1984
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Ovid Technologies (Wolters Kluwer Health), 1982
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Ovid Technologies (Wolters Kluwer Health), 1978