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Venditto, G.: Search engine showdown : IW Labs tests seven Internet search tools (1996)
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Garnsey, M.R.: What distance learners should know about information retrieval on the World Wide Web (2002)
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Page, A.: ¬The search is over : the search-engines secrets of the pros (1996)
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Edwards, D.H.: Evaluating Internet search tools : a librarian's guide (1997)
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Tenopir, C.: Online databases : natural language searching with WIN (1993)
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