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Albany, N.Y: Delmar Publishers, 1993
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American Economic Association, 2001
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Ovid Technologies (Wolters Kluwer Health), 1986
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Ovid Technologies (Wolters Kluwer Health), 1986
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Ovid Technologies (Wolters Kluwer Health), 1986
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Elsevier BV, 1986
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JSTOR, 1980
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American Economic Association, 1970
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JSTOR, 1966
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SAGE Publications, 1978
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Ovid Technologies (Wolters Kluwer Health), 1977
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Ovid Technologies (Wolters Kluwer Health), 1977
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Ovid Technologies (Wolters Kluwer Health), 2002
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Springer Science and Business Media LLC, 2001
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Springer Science and Business Media LLC, 2001
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Ovid Technologies (Wolters Kluwer Health), 2000
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Elsevier BV, 1997
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Ovid Technologies (Wolters Kluwer Health), 1995
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Informa UK Limited, 1995
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Springer Science and Business Media LLC, 1995