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RIAO 91 : Computer aided information retrieval. Conference, Barcelona, 2.-4.5.1991 (1991)
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Research and development in information retrieval : Proc., Berlin, 18.-20.5.1982 (1983)
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7e Dag van het Document : 19 & 20 mei 1998, Congrescentrum De Reehorst, Ede ; proceedings (1998)
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Advances in intelligent retrieval: Proc. of a conference ... Wadham College, Oxford, 16.-17.4.1985 (1986)
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SIGIR'92 : Proceedings of the 15th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval (1992)
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