1 option
The cipher disk.
- Format:
- Book
- Language:
- English
- Subjects (All):
- Ciphers.
- Physical Description:
- 1 online resource ([2] p.)
- Place of Publication:
- [Fort George G. Meade, Md.?] : National Security Agency, [19--]
- Notes:
- Title from resource description page (viewed Feb. 24, 2011).
- OCLC:
- 704406416
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.