International radiotelegraph conference of Washington: 1927.
Subtitle: Delegation of the United States of America, committee on tariffs, word count, and accounting; report on the history of the use of codes and code language, the international telegraph regulations pertaining thereto, and the bearing of this history on the Cortina report
By: by William F. Friedman
Contributors: Friedman, W. F
Publisher: Govt. print. off.
Published: 1928
Place of publication: Washington
Language: eng
Number of pages: 80
Subjects: Ciphers
Other titles: American report on codes and code languages
Notes: Running title: American report on codes and code languages