Skip to main content
Home
Discover
Discussions
Search
Toggle theme
Login
Sign up
Menu
Back to Categories
Ciphers
Loading books...
Preview
Mathematical Recreations and Essays
W. W. Rouse (Walter William Rouse) Ball
3.8
Preview
Elementary cryptanalysis
Helen Fouché Gaines
4.6
Preview
Manual for the Solution of Military Ciphers
Parker Hitt
4.4
Preview
Ciphers for the little folks : $b A method of teaching the greatest work of Sir Francis Bacon, baron of Verulam, viscount St. Albans
Dorothy Crain
4.5