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  • × type_ss:"z"
  • × year_i:[1970 TO 1980}
  1. International classification (1974 ff) 0.01
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    Footnote
    Spezialzeitschrift zum Thema mit einer laufenden Bibliographie als Nachtrag zur 'International Classification and Indexing Bibliography'. - Seit 1993 u.d.T.: Knowledge organization