Ciphers - History.

Codes, ciphers and spies = tales of military intelligence in World War I / by: (書目-語言資料,印刷品)

A material history of medieval and early modern ciphers = cryptography and the history of literacy / by: (書目-語言資料,印刷品)

Unsolved! : = the history and mystery of the world’s greatest ciphers from ancient Egypt to online secret societies / by: (書目-語言資料,印刷品)

English literature

Ciphers in literature.

Intelligence service

Literature, Medieval

Cryptography

Data structures (Computer science)

Popular works.

Ciphers

History of Science.

Popular Science, general.

Renaissance.

World War, 1914-1918

Writing

Data encryption (Computer science)

Written communication

Literacy

Civilization, Medieval.

History.

Manly, John Matthews,

Data Structures, Cryptology and Information Theory.