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Explains how to write and decipher space codes, hidden word codes, and alphabet codes and gives formulas for invisible ink. Includes suggestions for delivering coded messages.
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Previews available in: English
Subjects
Ciphers, Juvenile literature, Children: Babies ToddlersShowing 2 featured editions. View all 2 editions?
Edition | Availability |
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1
How to Write Codes and Send Secret Messages
September 1973, Scholastic Paperbacks
Paperback
in English
0590026062 9780590026062
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Feedback?April 9, 2020 | Edited by Mek | adding Children: Babies Toddlers to subjects |
February 13, 2020 | Edited by MARC Bot | remove fake subjects |
June 29, 2019 | Edited by MARC Bot | import existing book |
October 14, 2011 | Edited by EdwardBot | remove duplicate authors |
December 9, 2009 | Created by WorkBot | add works page |