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Stock, M.; Stock, W.G.: Recherchieren im Internet (2004)
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Babiak, U.: Effektive Suche im Internet : Suchstrategien, Methoden, Quellen (1998)
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- 77 TWP 3911(2)+22
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Sherman, C.; Price, G.: ¬The invisible Web : uncovering information sources search engines can't see (2001)
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