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New York; Düsseldorf [u.a.]: MacGraw-Hill, 1970
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Glenview, Ill. [u.a.]: Scott, Foresman & Co, 1975
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Emerald, 2014
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SAGE Publications, 2007
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SAGE Publications, 2005
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SAGE Publications, 2004
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SAGE Publications, 2001
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JSTOR, 1999
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Emerald, 1999
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SAGE Publications, 2000
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SAGE Publications, 1994
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SAGE Publications, 1994
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SAGE Publications, 1994
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SAGE Publications, 1994
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SAGE Publications, 1994
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SAGE Publications, 1993
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SAGE Publications, 1993
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SAGE Publications, 1993
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SAGE Publications, 1992
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SAGE Publications, 1992