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  • × subject_ss:"Subject headings, Library of Congress / Problems, exercises, etc"
  • × classification_ss:"025.4/9 / dc19"
  • × year_i:[1980 TO 1990}
  1. Cochrane, P.A.: Improving LCSH for use in online catalogs : exercises for self-help with a selection of background readings (1986) 1.00 
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