Making Secret Codes and Messages

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The clandestine world of spies and spying is built upon countries attempting to be problem solvers...This is a STEM journey that teaches readers how to make secret codes and messages through clear steps, simple supply lists, and helpful tips and fun facts.

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Making Secret Codes and Messages
2018, Black Rabbit Books

ISBN-13: 9781644662953

Trade paperback

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Making Secret Codes and Messages
2018, Hi Jinx Press

ISBN-13: 9781680725889

Hardcover

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