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1.
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London : Kegan Paul, 2002.
New edition.
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2.
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London : Penguin Books, c1995.
English | C 23 PAR.F |
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3.
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Washington, DC : Taylor & Francis, c1997.
Third edition.
English | C 231 YOD.E |
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4.
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New York : United Nations, Dept. of Public Information, 2000.
German | C 29 ANN.W |
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