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  1. Bauer, P.: Information Retrieval in externen allgemeinbibliographischen Online-Datenbanken : eine Einführung in die Praxis des Information Retrieval sowie Materialiensammlung zur Nutzung der Zeitschriftendatenbank (Online-Version) und von BIBLIO-DATA (1989) 0.01 
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  2. LISA: Online user manual (1987) 0.00 
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    Imprint
    Oxford : Learned Information

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