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Hancock, M.: Subject searching behaviour at the library catalogue and at the shelves : implications for online interactive catalogues (1987)
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Casson, E.; Fabbrizzi, A.; Slavic, A.: Subject search in Italian OPACs : an opportunity in waiting? (2011)
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Caro Castro, C.; Travieso Rodríguez, C.: Ariadne's thread : knowledge structures for browsing in OPAC's (2003)
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Hunter, R.N.: Successes and failures of patrons searching the online catalog at a large academic library : a transaction log analysis (1991)
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