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  • × subject_ss:"Subject headings"
  1. Lancaster, F.W.: Vocabulary control for information retrieval (1986) 0.02 
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    Date
    22. 4.2007 10:07:51
  2. Sears' list of subject headings (2007) 0.01 
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    Date
    4. 9.2015 15:54:56

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