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How to Tell a Secret: Tips, TricksTechniques for Breaking CodesConveying Covert Information by J.G. Lewin, P.J. Huff

How to Tell a Secret: Tips, TricksTechniques for Breaking CodesConveying Covert Information

J.G. Lewin, P.J. Huff

258 pages • first pub 2007 (editions)

challenging informative slow-paced
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