The Harper dictionary of modern thought /

समान संसाधन

• Hutchinson Dictionary of ideas
  प्रकाशित: (2005)
• Children's illustrated encyclopedia /
  प्रकाशित: (1998)
• Britannica concise encyclopedia
  प्रकाशित: (2006)
• The Hutchinson factfinder
  प्रकाशित: (2006)
• Famous first facts : a record of first happenings,discoveres, and inventions in world history /
  द्वारा: Anzovin, Steven
  प्रकाशित: (2000)