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  • × language_ss:"e"
  • × type_ss:"m"
  • × year_i:[1920 TO 1930}
  1. Jevons, W.S.: ¬The principles of science : a treatise on logic and scientific method (1924) 0.01 
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  2. Bliss, H.E.: ¬The organization of knowledge and the system of the sciences (1929) 0.00 
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  3. Sayers, W.C.B.: ¬A manual of classification for librarians and bibliographers (1926) 0.00 
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