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Cleverdon, C.W.; Mills, J.: ¬The testing of index language devices (1985)
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Chowdhury, G.G.; Mahapatra, M.: Applications of the theory of relational analysis in information retrieval (1990)
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Harter, S.P.; Hert, C.A.: Evaluation of information retrieval systems : approaches, issues, and methods (1997)
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Information Society : agenda for action in the UK (1996)
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Hert, C.A.: Exploring a new model for understanding information retrieval interactions (1992)
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