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Beck, H.: Klassifikation und Informationswiedergewinnung : zu aktuellen Problemen aus bibliothekarischer Sicht (1977) 0.06

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Source: Zentralblatt für Bibliothekswesen. 90(1977), S.201-214

Stock, W.G.: Qualitätskriterien von Suchmaschinen : Checkliste für Retrievalsysteme (2000) 0.01

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Source: Password. 2000, H.5, S.22-31

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