Top Secret : A Handbook of Codes, Ciphers, and Secret Writing by Paul B. Janeczko; Illustrated by Jenna LaReau
	List Price:   $16.99 Unit Price:   $13.59 You Save:   $3.40 (20%) ISBN-10:   0763609714 ISBN-13:   9780763609719 Publisher:   Random House PS [IN]; Candlewick Press Category:   Activity Books Pub. Date:   May 2004 Pages:   144 Format:   Hardcover Ages:   9 and up Grades:   4th and up
Subjects
CRYPTOGRAPHY CIPHERS ESPIONAGE_JUVENILE LITERATURE