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Fun with Secret Writing
Geoffrey Frederick Lamb
出版Courier Corporation, 2002-05-01
主題Games & Activities / PuzzlesBusiness & Economics / Business WritingReference / General
ISBN04864209819780486420981
URLhttp://books.google.com.hk/books?id=Nd65uZ9iO3YC&hl=&source=gbs_api
EBookSAMPLE
註釋Fascinating, easy-to-understand book for would-be cryptanalysts of all ages teaches how to invent and decipher a host of codes and secret messages, including the "Moving Ahead" cipher used by Julius Caesar; dots and pinpricks, as used by the secret Rosicrucian society; and even a system used by Sherlock Holmes. 14 black-and-white illustrations.