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Henry, M.K.; Keenan, L.; Reagan, M.: Search sheets for OPACs on the internet : a selective guide to U.S. OPACs utilizing VT100 emulation (1991)
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Millsap, L.; Ferl, T.E.: Search patterns of remote users : an analysis of OPAC transaction logs (1993)
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Sloan, B.G.: Remote access : design implications for the online catalog (1991)
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Lazinger, S.S.; Peritz, B.C.: Reader use of a nationwide research library network : local OPAC vs. remote files (1991)
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