Report on the history of the use of codes and code language, the international telegraph regulations pertaining thereto, and bearing of this history on the Cortina report
By: by Major William F. Friedman...technical adviser, United States delegation.
Contributors: Friedman, William F. 1891-1969.; International radiotelegraph conference, Washington, D.C.,
Publisher: U.S. Govt. print. off.
Published: 1928
Place of publication: Washington
Language: eng
Number of pages: 80
Subjects: Cipher and telegraph codes; Radio