How to Write Codes and Send Secret Messages - Softcover

Peterson, John Lawrence

 
9780590026062: How to Write Codes and Send Secret Messages

Synopsis

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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Other Popular Editions of the Same Title

9780590720007: How to Write Codes and Send Secret Messages

Featured Edition

ISBN 10:  0590720007 ISBN 13:  9780590720007
Publisher: Imprint unknown, 1979
Softcover