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  1. Efthimiadis, E.N.; Neilson, C.: ¬A classified bibliography on online public access catalogues (1989) 0.03
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    Abstract
    Bibliography on all aspects of online public access catalogues, covering the period to 1988. Citations are listed in subject order supplemented by an author index. A description of the subject coverage, source of citations and how to use the bibliography is given in the introduction.
  2. Dale, D.C.: Subject access in online catalogs : an overview bibliography (1989) 0.03
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  3. Efthimiadis, E.N.; Mitev, N.N.: ¬A classified bibliography on online public access catalogues (1987) 0.03
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  4. Dale, D.C.: Subject access in online catalogs : an overview bibliography (1989) 0.02
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