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Nickerson, S.: ¬The application of Z39.50 in your library (1998)
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Sturr, N.O.: WAIS: an Internet tool for full-text searching (1997)
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Nickerson, G.: Networked resources (1991)
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Falk, H.: Building and using document databases (1998)
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Hainebach, R.: European Community databases : a subject analysis (1992)
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