Secrets, Signs, Signals and Codes

Secrets, Signs, Signals and Codes by Shari Lewis

ISBN10: 0030497167
ISBN13: 978-0030497162
Author: Shari Lewis
Title: Secrets, Signs, Signals and Codes
Publisher: Henry Holt & Company, Inc. (October 1980)
Language: English
Size ePub: 1908 kb
Size PDF: 1519 kb
Rating: 3.6/5
Votes: 314
Pages:
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Secrets, Signs, Signals and Codes by Shari Lewis



Discusses codes, silent signals, invisible writing, and other ways to conceal messages.

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