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Edwards, D.H.: Evaluating Internet search tools : a librarian's guide (1997)
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Vidmar, D.; Anderson, C.: History of Internet search tools (2002)
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Austin, D.: How Google finds your needle in the Web's haystack : as we'll see, the trick is to ask the web itself to rank the importance of pages... (2006)
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Hancock, B.: Subject-specific search engines : using the Harvest system to gather and maintain information on the Internet (1998)
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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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