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  • × theme_ss:"Informationsmittel"
  • × type_ss:"a"
  • × year_i:[1980 TO 1990}
  1. Lang, J.: Evaluation of reference sources published or to be published (1986) 0.01 
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  2. Digel, W.: Problematik in der Auswahl der Fakten : Objektivität und Problembewußtsein 'Zeitgeschichte in Lexika' (1982) 0.01 
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    Source
    Börsenblatt. 38(1982) H.14, S.369

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