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Manual for the Solution of Military Ciphers [electronic resource] / Parker Hitt
Author:  Hitt, Parker, 1878-
Subject:  UB, Cryptography, Ciphers
Format:   Text
Date issued:  2015
Language:   English
Publisher:  Project Gutenberg,
Rights:  Public domain in the USA.
Download link:  Manual for the Solution of Military Ciphers [electronic resource] / Parker Hitt