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Crews, K.D.: ¬The accuracy of reference service : variables for research and implementation (1988)
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Mayerhöfer, J.: Informations- und Wissensvermittlung in Bibliotheken (1983)
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Derr, R.L.: Questions: definitions, structure, and classification (1985)
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Derr, R.L.: Information seeking expressions of users (1984)
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Derr, R.L.: ¬A conceptual analysis of information need (1983)
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Galsterer, B.: Einsatzmöglichkeiten neuer Medien in Öffentlichen Büchereien : die Bibliothek als Informations-Vermittlungsstelle (1984)
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