Éléments de cryptotypographie et de correspondance postale, télégraphique et téléphonique secrète
By: par A. Boetzel.
Contributors: George Fabyan Collection (Library of Congress)
Publisher: Lib. Fischbacher
Published: 1898
Place of publication: Paris
Language: fre
Number of pages: 91
Subjects: Cryptography.
Notes: LC copy has author's presentation inscription; item no. 174 of the Fabyan Collection.