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How to Write Codes and Send Secret Messages

John Lawrence Peterson · 1973

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About the book

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.

Book details

Year
1973
Language
English
Publisher
Scholastic Paperbacks
Editions
1
ISBN
9780590026062

Data source: Wikidata

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