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- Year: 2006
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- Language: English
- Year: 2006
- Author: Woodrow Wilson International Center for Scholars., Karp Ivan, Kreamer Christine Mullen, Lavine Steven
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- Year: 1992
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- Year: 2011
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- Year: 2009
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- Year: 2014
- Author: Fung Anthony Y. H.
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- Year: 2018
- Author: Geissler Theo, Zimmermann Olaf
- Language: German
- Year: 2015