Les écritures secrètes (alphabets, chiffres, grilles) et les encres mystérieuses dites sympathiques
By: par Charles Brémond.
Contributors: George Fabyan Collection (Library of Congress)
Publisher: Albin Michel
Published: 1917
Place of publication: Paris
Language: fre
Number of pages: 48
Subjects: Ciphers.; Cryptography.
Notes: LC copy is item no. 186 of the George Fabyan Collection.