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224 pages • first pub 2000 (view editions)
ISBN/UID: 9780439108423
Format: Paperback
Language: English
Publisher: Scholastic
Edition Pub Date: 01 April 2000
challenging
informative
mysterious
medium-paced
Description
Collects secret codes to solve, and provides clues on constructing and cracking common types.
Community Reviews
Content Warnings
224 pages • first pub 2000 (view editions)
ISBN/UID: 9780439108423
Format: Paperback
Language: English
Publisher: Scholastic
Edition Pub Date: 01 April 2000
challenging
informative
mysterious
medium-paced
Description
Collects secret codes to solve, and provides clues on constructing and cracking common types.
Community Reviews
Content Warnings