The Dictionary of National Biography: Twenthieth Century

Eitemau Tebyg

• The Dictionary of National Biography
  Cyhoeddwyd: (1960)
• The Dictionary of National Biography: Twenthieth Century
  Cyhoeddwyd: (2013)
• The Dictionary of National Biography: Twenthieth Century
  Cyhoeddwyd: (1996)
• The Dictionary of National Biography: Twenthieth Century
  Cyhoeddwyd: (1995)
• The Dictionary of National Biography: Twenthieth Century
  Cyhoeddwyd: (1986)