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author_ss:"Hancock-Beaulieu, M."
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author_ss:"Walker, S."
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theme_ss:"OPAC"
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year_i:[1990 TO 2000}
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Walker, S.; Hancock-Beaulieu, M.: OKAPI at city : an evaluation facility for interactive IR (1991)
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Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992)
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