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Alfred B Shepperson
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The standard telegraphic cipher code for the cotton trade
Shepperson, Alfred B., d. 1911. · A. Shepperson
318 sayfa · 1881
Cipher and telegraph codes -- Cotton trade.
Revised and improved edition of the telegraphic cipher code especially adapted to the cotton trade
Shepperson, Alfred B., d. 1911. · Shepperson Publishing Company
220 sayfa · 1878
Cipher and telegraph codes -- Cotton trade.