This specific ISBN edition is currently not available.
Discusses and provides practice in making and breaking codes and ciphers, as well as in building simple coding devices to transmit secret messages.
"synopsis" may belong to another edition of this title.
(No Available Copies)
Can't find the book you're looking for? We'll keep searching for you. If one of our booksellers adds it to AbeBooks, we'll let you know!
ISBN 10: 0027478106 ISBN 13: 9780027478105 Publisher: Simon & Schuster Children's ..., 1984 Hardcover
You will be charged in {0}.
You will be shown prices in {0} as a reference only. Your orders will process in {1}.
Learn more about currency preferences.
Loading...
Saving your site preferences
Site shopping preferences saved