TECHNOLOGY
Janeczko, Paul B.

Top Secret: A Handbook of Codes, Ciphers, and Secret Writing

(3) 4-6 Illustrated by Jenna LaReau. Janeczko provides an agreeable grab-bag of codes, ciphers, and recipes for invisible ink. The humorously illustrated book offers plenty of opportunities for practice in making--and breaking--codes, and solutions to the practice puzzles are provided at the back as is a short reading list. Ind.

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