Twentieth Century

Eitemau Tebyg

• The meaning of the Twentieth Century
  gan: Booulding, Kenneth E.
  Cyhoeddwyd: (1964)
• History of the World in the Twentieth Century
  gan: Watt, D.C
  Cyhoeddwyd: (1967)
• History of the World in the Twentieth Century
  gan: Spencer, Frank
  Cyhoeddwyd: (1967)
• History of the World in the Twentieth Century
  gan: Brown, Neville
  Cyhoeddwyd: (1967)
• Twentieth-Century Pacifism
  gan: Brock, Peter
  Cyhoeddwyd: (1970)