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Found 3 from your keywords: subject="Ciphers"
cover
The Usborne book of secret codes
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Eileen O'BrienDiana RiddellMark Watkinson

The Usborne Book of Secret Codes features all kinds of codes and secret writing to learn, gadgets that young readers can make for coding and decoding messages and hints on how to pass top secret information without it being intercepted

Edition
-
ISBN/ISSN
0590631527
Collation
32 pages : illustration ; 24 cm
Series Title
-
Call Number
652 OBR
cover
Codemaster #2 : how to write and decode More secret messages
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Marvin Miller

This book contains fourteen new tricky codes all designed to help you keep your secrets safe.

Edition
-
ISBN/ISSN
9780439761192
Collation
70 pages : illustration ; 19 cm
Series Title
-
Call Number
652 MIL
cover
Roald Dahl's Matilda's how to be a genius
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Quentin BlakeRoald Dahl

MATILDA WORMWOOD is a genius - her brain fizzes and bubbles with brilliance. She outwits her gruesome parents, and even her terrifying head teacher, the monstrous Miss Trunchbull. Now, YOU TOO can baffle, bewilder and bamboozle your friends and family! ASTOUND them with feats of calculation, scientific miracles, incredible creativity and fiendishly clever tricks, all with simple, step-by-…

Edition
-
ISBN/ISSN
9780241371183
Collation
83 pages ; illustration ; 23 cm
Series Title
-
Call Number
793.8 DAH