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Porter, M.; Galpin, V.: Relevance feedback in a public access catalogue for a research library : Muscat at the Scott Polar Research Institute (1988)
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Hancock-Beaulieu, M.: Searching behaviour and the evaluation of online catalogues (1991)
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Hug, H.; Nöthiger, R.: ETHICS: an online public access catalogue at ETH-Bibliothek, Zürich (1988)
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Walker, S.: ¬The Okapi online catalogue research projects (1989)
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