Secret writing tricks
Book Description
Examines a number of different ways of writing secret messages, including invisible ink and a variety of ciphers. Gives suggestions and aids for code-breaking.
Book Information
Publisher | T. Nelson |
Binding | Hardcover (2 editions) |
Reading Level | Uncategorized |
# of Pages | 88 |
ISBN-10 | 0840764650 |
ISBN-13 | 978-0840764652 |
Publication Date | /1975 |
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