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)

Civilization, Medieval.

History.

Manly, John Matthews,

Data Structures, Cryptology and Information Theory.

Popular works.

Ciphers

History of Science.

Popular Science, general.

Renaissance.

World War, 1914-1918

Writing

Data encryption (Computer science)

Written communication

Literacy