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Sherman, C.; Price, G.: ¬The invisible Web : uncovering information sources search engines can't see (2001)
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Sherman, C.R.: ICONCLASS: a historical perspective (1987)
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Sherman, R.J.: ¬The electronic book (1993)
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Sherman, C.: What's new with Web search (2000)
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Sherman, C.: ¬The future of Web search (1999)
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Lewandowski, D.; Mayr, P.: Exploring the academic invisible Web (2006)
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Borgman, C.L.: ¬The invisible library : paradox of the global information infrastructure (2003)
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