3
   
7
   
8
   
10
Published: Baden-Baden, Nomos-Verl.-Ges., 1998
   
14
Published: Berlin, E. Schmidt, 1987-[Mai 2019]
   
17
Published: Dessau, Umweltbundesamt, 1992-2006
   
20
Published: Baden-Baden, Nomos-Verl.-Ges., 1995-1996
   

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