The codebreakers the story of secret writing david kahn 42 out of 5 stars 11 hardcover 29 offers from 2250 codes and ciphers secret writing through the ages by john laffin 1964 06 01 50 out of 5 stars 2 hardcover 86456 only 1 left in stock order soon next pages with related products see and discover other items code breaker back to top get to know us careers blog . The story begins with herbert o yardleys cryptologic section of military intelligence in world war i and black chamber of the 1920s the events of the period between the wars are woven into a coherent narrative leading to the american success in breaking japanese codes as war came closer. The codebreakers the story of secret writing by kahn david 1930 cn publication date 1967 topics cryptography cryptographers publisher new york macmillan collection inlibrary printdisabled internetarchivebooks china digitizing sponsor internet archive contributor internet archive language english includes bibliographical references access restricted item true addeddate 2012 01 10
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