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Bishop, A.P.; Liddy, E.D.; Settel, B.: Index quality study : pt.1: quantitative description of back-of-the-book indexes (1991)
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Liddy, E.D.: ¬The art of back-of-the-book indexes (1991-92)
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Jörgensen, C.; Liddy, E.D.: Information access or information anxiety? : an explanatory evaluation of book index features (1996)
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Liddy, E.D.; Jorgensen, C.: Modelling information seeking behaviours in index use (1993)
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Jorgensen, C.; Liddy, E.D.: ¬An analysis of information seeking behaviours in index use, or opening Pandora's Box (1994)
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