Codes, ciphers and secret writing
Book Description
Describes various types of codes and ciphers giving examples of their use.
Book Information
Publisher | Hamlyn Publishers |
Binding | Board book (2 editions) |
Reading Level | Uncategorized |
# of Pages | 77 |
ISBN-10 | 0600317633 |
ISBN-13 | 978-0600317630 |
Publication Date | /1973 |
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