書籍詳情
格式
平裝書
頁數
96
語言
英語
已出版
Nov 1, 2013
出版商
Hardie Grant Egmont
ISBN-10
1742976522
ISBN-13
9781742976525
描述
One day Billie and Jack find a note hidden under a rock at school. It seems to be written in code! It's time the two friends put their code-breaking skills to the test.