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Liu, H.-M.C.: Selection and comparison of WWW search tools (1996) 0.00

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Source: Journal of information; communication; and library science. 2(1996) no.4, S.41-63

Lin, Z.; Baoming, Z.: Comparative study of WWW search tools (1998) 0.00

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Source: Journal of the China Society for Scientific and Technical Information. 17(1998) no.4, S.273-280

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