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破译密码

Lisa Thompson汤普森丽莎

出版	中国电力出版社, 2005
ISBN	75083266019787508326603
URL	http://books.google.com.hk/books?id=3b_qAAAACAAJ&hl=&source=gbs_api

註釋

Use your skills to break some codes and learn how codes have been used since ancient times. And find out how breaking secret enemy codes actually helped to win wars.