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Vidmar, D.J.; Anderson-Cahoon, C.J.: Internet search tools : history to 2000 (2009) 0.03

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Source: Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates

Vidmar, D.J.: Darwin on the Web : the evolution of search tools (1999) 0.02

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Source: Computers in libraries. 19(1999) no.5, S.22-28

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