Secret writing
Subtitle: an introduction to cryptograms, ciphers, and codes
By: by Henry Lysing (John L. Nanovic).
Publisher: Dover Publications
Published: 1974
Place of publication: New York
Language: eng
Number of pages: 117
Subjects: Cryptography.; Ciphers.; Cryptograms.
Notes: Reprint of the 1936 ed. published by D. Kemp, New York.