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Published: Witterschlick/Bonn : Wehle, 1999.
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Published: Washington, DC : U.S. Government Printing Office, [1999].
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Published: Münster ; München : Unrast, 2002.
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Published: [Frankfurt, Main] : Societäts-Verl, 2004.
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Published: Berlin : Friedrich-Ebert-Stiftung, Forum Berlin, 2006.
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