Fifty-sixth year book /

Eitemau Tebyg

• Fourty first year book /
  gan: National Society for the Study
  Cyhoeddwyd: (1942)
• Seventy first year book /
  gan: National Society for the Study
  Cyhoeddwyd: (1972)
• Seventy first year book /
  gan: National Society for the Study
  Cyhoeddwyd: (1972)
• Sixty fourth year book Pt[1] Philosophical redirection of ed /
  gan: National Society for the Study
  Cyhoeddwyd: (1965)
• Modern philosophics and education: [54]th Year book of the n /
  gan: National Society for the Study
  Cyhoeddwyd: (1955)