An encyclopaedia of the history of technology.

Geahča maid

• Connections.
  Dahkki: Burke, James
  Almmustuhtton: (2007)
• A culture of improvement.
  Dahkki: Friedel, Robert
• The new encyclopaedia britannica : macropaedia knowledge in depth
  Almmustuhtton: (1994)
• The new encyclopaedia britannica : the index, a-k
  Dahkki: Encyclopaedia Britannica, Inc
  Almmustuhtton: (1994)
• The new encyclopaedia britannica : the index, l-z
  Dahkki: Encyclopaedia Britannica, Inc
  Almmustuhtton: (1994)