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Upper Saddle River, N.J: Prentice Hall, 1996
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Lanham [u.a.]: Rowman & Littlefield, 2005
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Boulder: Lynne Rienner Publishers, 1998
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Reston, Va.: Reston Publ. Co., 1984
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Upper Saddle River, NJ [u.a.]: Prentice Hall, 1996
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Boulder: Lynne Rienner Publishers, 2023
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New York ;; Oxford: Oxford University Press, 1990
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Cambridge University Press (CUP), 2008
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Wiley, 1982
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Wiley, 1979
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JSTOR, 2007
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Oxford University Press (OUP), 1991
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JSTOR, 1992
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Wiley, 1983
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Elsevier BV, 1982
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SAGE Publications, 1976
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Informa UK Limited, 1993