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East, J.W.: Subject retrieval of scholarly monographs via electronic databases (2006)
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Dwyer, J.: How deep is your database? : the OCLC pilot project on contents enrichment (1991)
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Shoham, S.; Yitzhaki, M.: Classification systems and the online catalog (1994)
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Svenonius, E.; Baughman, B.; Molto, M.: Title page sanctity? : the distribution of access points in a sample of English language monographs (1986)
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Long, C.E.: Improving subject searching in Web-based OPACs : evaluation of the problem and guidelines for design (2000)
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