Secret and Urgent - The Story of Codes and Ciphers

Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

• | Author: Anon
• | Publisher: McMaster Press
• | Publication Date: May 24, 2012
• | Number of Pages: 282 pages
• | Binding: Paperback or Softback
• | ISBN-10: 1447456106
• | ISBN-13: 9781447456100