Telegraphic code, to ensure secresy in the transmission of telegrams. By Robert Slater ...
|Main Author:||Slater, Robert, 1943-|
London, Simpkin, Marshall, Hamilton, Kent & co., ltd., 1906.
Cipher and telegraph codes.
All editions of this code are printed from identical plates and correspond one with another exactly.
On cover: Slater's telegraphic code.
xvi, , 250 p.
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