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Loads/codes/secret Cypher
Loads/codes/secret Cypher
Author: Paul B. Janeczko
Discusses and provides practice in making and breaking codes and ciphers, as well as in building simple coding devices to transmit secret messages.
ISBN-13: 9780246128621
ISBN-10: 0246128623
Publication Date: 3/27/1986
Pages: 112
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Publisher: Collins
Book Type: Hardcover
Members Wishing: 0
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