The New Encyclopaedia Britannica : in 30 volumes : macropædia : knowledge in depth. Volume 1, Aalto - Arithmetic.

Eitemau Tebyg

• The New Encyclopaedia Britannica : in 30 volumes : macropædia : knowledge in depth. Volume 16, Rubens - Somalia.
  Cyhoeddwyd: (1980)
• The New Encyclopaedia Britannica : in 30 volumes : macropædia : knowledge in depth. Volume 18, Taylor - Utah.
  Cyhoeddwyd: (1980)
• The New Encyclopaedia Britannica : in 30 volumes : macropædia : knowledge in depth. Volume 19, Utilitarianism - Zwingli.
  Cyhoeddwyd: (1980)
• The New Encyclopaedia Britannica : in 30 volumes : macropædia : knowledge in depth. Volume 2, Arizona - Bolivar.
  Cyhoeddwyd: (1980)
• The New Encyclopaedia Britannica : in 30 volumes : macropædia : knowledge in depth. Volume 14, Peking - Probability.
  Cyhoeddwyd: (1980)