The meaning of the Twentieth Century

Eitemau Tebyg

• 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
  gan: Colton, Joel
  Cyhoeddwyd: (1970)
• Europe in the Twentieth Century
  gan: Lietheim, George
  Cyhoeddwyd: (1972)