Elementary cryptanalysis
Subtitle: a study of ciphers and their solution
By: by Helen Fouché Gaines ; sponsored by American Cryptogram Association
Publisher: American Photographic Publishing Co.
Published: 1943
Place of publication: Boston
Language: eng
Number of pages: 230
Subjects: Cryptography; Ciphers
Notes: Errata sheet inserted

Includes index

"Bibliography by W. D. Witt": p. [224]-225