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5
Published: Kehl, Morstadt, 1994
   
6
Published: Kehl, Morstadt, 1995
   
7
Published: Lengerich, Pabst Science Publ., 2010
   
8
Published: Wiesbaden, VS Verl. für Sozialwissenschaften, 2006
   
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19
Published: Frankfurt am Main [u.a.], Lang, 2004
   

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