Secretwriting
Subtitle: an introduction to cryptograms, ciphers and codes
By: by Henry Lysing (John L. Nanovic).
Publisher: Dover Publications; Constable
Published: 1974
Place of publication: New York; London
Language: eng
Number of pages: 117
Subjects: Cryptography.
Notes: Originally published, NewYork , D. Kemp and Co., 1936.