- Creator:
- Crowther, William
- Contributor:
- O'Neill, Judy E.
- Created:
- 1990-03-12
- Contributed By:
- University of Minnesota Libraries, Charles Babbage Institute.
- Last Updated:
- 2017-11-17
- Creator:
- Winograd, Terry
- Contributor:
- Norberg, Arthur L.
- Created:
- 1991-12-11
- Contributed By:
- University of Minnesota Libraries, Charles Babbage Institute.
- Last Updated:
- 2017-11-17