Douglas Adams1952–2001Sir Isaac Newton, renowned inventor of the milled-edge coin and the catflap!
Dirk Gently’s Holistic Detective Agency (1987)- Douglas Adams. The Salmon of Doubt: Hitchhiking the Galaxy One Last Time. New York: Random House, 2002, 135–136.
- Dirk Gently’s Holistic Detective Agency (1987)





