Bound To Stay Bound

		Code makers & code breakers (Beyond The Battlefield)  Author: Wells, Allen R.  Publisher:  Rourke Educational Media (2021)  Dewey: 355  Classification: Nonfiction  Physical Description: 32 p., ill. (some col.), 23 cm  BTSB No: 933254  ISBN: 9781731649034  Ages: 9-12  Grades: 4-7  Subjects:  Ciphers  Cryptography  Military art and science
	Price: $16.77

Summary:
Uncovers the amazing tales of courageous and innovative people and groups who created--and cracked--seemingly unbreakable codes during times of war.