General & OtherDigraphic substitution : the Playfair cipher, the four square cipherWilliam Maxwell Bowers![Digraphic substitution : the Playfair cipher, the four square cipher]()
Digraphic substitution : the Playfair cipher, the four square cipher
William Maxwell Bowers
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“Digraphic substitution : the Playfair cipher, the four square cipher” by William Maxwell Bowers: a public-domain book in “General & Other”, written in…
Catalogue details
- Author
- William Maxwell Bowers
- Category
- General & Other
- Language
- English
- Source
- HathiTrust