• publisher: D. Appleton and company
  • creator: Herbert Spencer
  • contributor: unknown library
  • mediatype: texts
  • years: 1864
  • pages: 505
  • language: English
  • lccn: 34040553
  • notes: First published in English periodicals, chiefly the quarterly reviews, and issued in London with several other papers, under the title of "Essays, scientific, political and speculative", first and second series, 1857-1863. cf. Pref.
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