Great mysteries of the 20th century.

Míreanna comhchosúla

• Great mysteries of the 20th century.
  de réir: Reader's Digest Association
  Foilsithe / Cruthaithe: (1996)
• Mysteries of the unexplained.
  de réir: Reader's digest
• The guinness book of world records 1998.
  de réir: Speer Glenn M.
  Foilsithe / Cruthaithe: (1997)
• Scholastic book of world records, 2008.
  de réir: Morse, Jenifer Corr
• Guinness world records : to the extreme /
  de réir: Ryan-Herndon, Lisa L.
  Foilsithe / Cruthaithe: (2007)