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Birmingham, J.: Internet search engines (1996)
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Overton, R.: Search engines get faster and faster, but not always better (1996)
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Makulowich, J.S.: 1997; what's ahead? (1997)
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Lambert, N.: ORBIT'S PowerSearch : what's great, what's missing (1994)
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Collins, B.R.: Webwatch (1997)
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