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Leipzig: Reclam, 1991
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London [u.a.]: Hutchinson, 1989
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Elsevier BV, 2011
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Project MUSE, 2011
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Elsevier BV, 2008
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Ovid Technologies (Wolters Kluwer Health), 2005
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Elsevier BV, 2003
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Elsevier BV, 1998
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Elsevier BV, 1998
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Elsevier BV, 1998
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The University of Iowa, 1995
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The University of Iowa, 1995
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British Medical Association, 1993
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Project MUSE, 1984
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Project MUSE, 1984
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Project MUSE, 1984
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The University of Iowa, 1980
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Project MUSE, 1984
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The University of Iowa, 1980
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Project MUSE, 1984