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  • × classification_ss:"Z695.P905 1999"
  1. Principles underlying subject heading languages (SHLs) (1999) 9.06 
    9.05783 = weight(lcsh_ss:Subject headings in 1659) [ClassicSimilarity], result of:
  9.05783 = fieldWeight in 1659, product of:
    1.0 = tf(freq=1.0), with freq of:
      1.0 = termFreq=1.0
    9.05783 = idf(docFreq=13, maxDocs=44218)
    1.0 = fieldNorm(doc=1659)
    Lcsh
    Subject headings
    Subject
    Subject headings