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- lcsh's%3a%22Online information services%22 2
- lcshs%3a%22Online information services%22 2
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Baer, N.L.; Barrett, J.A.; Johnson, K.E.: OPAC database creation problems (1995)
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- Information technology and libraries. 14(1995) no.3, S.179-184
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Johnson, K.E.: OPAC missing record retrieval (1996)
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- Information technology and libraries. 15(1996) no.3, S.169-171