Six Thinking Hats

Geahča maid

• SIX THINKING HATS
  Dahkki: BONO EDWARD
  Almmustuhtton: (2000)
• Six Thinking Hats
  Dahkki: De Bono, Edward
  Almmustuhtton: (2000)
• SIX THINKING HATS
  Dahkki: BONO EDWARD DE
  Almmustuhtton: (2000)
• Six Thinking Hats
  Dahkki: Bono, Edward De
  Almmustuhtton: (2000)
• Six Thinking Hats
  Dahkki: Bono, Edward de
  Almmustuhtton: (1999)