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  • × author_ss:"Umweltbundesamt"
  • × type_ss:"el"
  • × year_i:[1990 TO 2000}
  1. Umweltbundesamt: ¬Die Umwelt-CD : UMPLIS, Forschung, Literatur, Recht, Konferenzen, Zeitschriften, Adressen (1997) 0.04 
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    1 CD-ROM + Benutzerhandbuch