Can flashing lights send out a secret message? Did a famous spy use sketches of butterflies to hide messages? Can a digital photo hide a secret code? For centuries, spies have used many different ways to pass secret information. Codes and ciphers keep information safe from the enemy. Author Susan K. Mitchell uncovers the secrets to the amazing world of spy codes and ciphers.
-
Creators
-
Publisher
-
Release date
June 28, 2013 -
Formats
-
OverDrive Read
- ISBN: 9781464504099
-
EPUB ebook
- ISBN: 9781464504099
- File size: 3754 KB
-
-
Languages
- English
-
Levels
- Lexile® Measure: 820
- Text Difficulty: 3-4
-
Reviews
Loading
Formats
- OverDrive Read
- EPUB ebook
subjects
Languages
- English
Levels
- Lexile® Measure:820
- Text Difficulty:3-4
Why is availability limited?
×Availability can change throughout the month based on the library's budget. You can still place a hold on the title, and your hold will be automatically filled as soon as the title is available again.
The Kindle Book format for this title is not supported on:
×Read-along ebook
×The OverDrive Read format of this ebook has professional narration that plays while you read in your browser. Learn more here.