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Hock, R.E.: How to do field searching in Web search engines : a field trip (1998)
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Feldman, S.: "Just the answer, please" : choosing a Web search service (1997)
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Lin, Z.; Baoming, Z.: Comparative study of WWW search tools (1998)
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Koehler, W.C.: Internet search note : specialized retrieval and Web search engines (1997)
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Internet search tool details (1996)
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