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Language: en
Pages: 116
Pages: 116
Type: BOOK - Published: 2005 - Publisher: Chronicle Books
Language: en
Pages: 134
Pages: 134
Type: BOOK - Published: 1995 - Publisher: Carlton Publishing Group
Language: en
Pages: 58
Pages: 58
Type: BOOK - Published: 2020-07-27 - Publisher:
This book contains 25 secret codes for your child to crack! Suitable for ages 6 - 10, this book contains clues and answers as well as space to create their own
Language: en
Pages: 128
Pages: 128
Type: BOOK - Published: 1995-01-01 - Publisher:
Language: en
Pages: 100
Pages: 100
Type: BOOK - Published: 1984-01-01 - Publisher: Courier Corporation
Explains various methods used in cryptography and presents examples to help readers in breaking secret codes
