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  • × theme_ss:"Geschichte der Sacherschließung"
  • × theme_ss:"Biographische Darstellungen"
  1. Rayward, W.B.: Visions of Xanadu : Paul Otlet (1868-1944) and hypertext (1994) 0.00 
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  2. Buckland, M.K.: Emanuel Goldberg and his knowledge machine : information, invention, and political forces (2006) 0.00 
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