Two-in-one code condenser
Subtitle: a standard system for rapidly coding two code messages in one word ...
By: Compiled in strict conformity with the international telegraph service regulations ... by J. Williams and J. Ribeiro.
Contributors: Ribeiro, J., joint author.
Publisher: Codes Limited
Published: 1910
Place of publication: London
Language: eng
Number of pages: 88
Subjects: Cipher and telegraph codes.