Code breaker, spy hunter : how Elizebeth Friedman changed the course of two world wars /
Wallmark, Laurie,author.
Smart, Brooke,1985-illustrator.
Includes bibliographical references.
Friedman, Elizebeth, 1892-1980
Friedman, Elizebeth, 1892-1980.
Friedman, Elizebeth, 1892-1980.
Cryptographers
Cryptography
Cryptographers.
Cryptography.
Cryptographers.
Cryptography.