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157 pages • first pub 2007 (editions)
ISBN/UID: None
Format: Not specified
Language: English
Publisher: Not specified
Publication date: Not specified
nonfiction
childrens
mathematics
informative
lighthearted
slow-paced
Description
This volume contains tips on how to crack substition codes, message systems such as Morse and the secrets of ENIGMA are revealed.
Community Reviews
Content Warnings
157 pages • first pub 2007 (editions)
ISBN/UID: None
Format: Not specified
Language: English
Publisher: Not specified
Publication date: Not specified
nonfiction
childrens
mathematics
informative
lighthearted
slow-paced
Description
This volume contains tips on how to crack substition codes, message systems such as Morse and the secrets of ENIGMA are revealed.
Community Reviews
Content Warnings