The penguin dictionary of curious and interesting numbers /

Míreanna comhchosúla

• The penguin dictionary of geology /
  de réir: Whitten, D. G. A.
  Foilsithe / Cruthaithe: (1972)
• Penguin dictionary of botany
  Foilsithe / Cruthaithe: (1984)
• The Penguin dictionary of science
  de réir: Uvarov, E. B. (Eugene Boris), 1910-
  Foilsithe / Cruthaithe: (1979)
• The Penguin dictionary of chemistry /
  Foilsithe / Cruthaithe: (1990)
• The Penguin dictionary of religions
  Foilsithe / Cruthaithe: (1984)