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Brandt, D.S.: Ovid searching software (1996)
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Hock, R.E.: How to do field searching in Web search engines : a field trip (1998)
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Sieverts, E.: Citatie-zoeken op het Web (1997)
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Duval, B.K.; Main, L.: Searching on the Net : general overview (1996)
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Webber, S.: Search engines and news services : developments on the Internet (1998)
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