书籍详情
格式
平装书
页数
96
语言
英语
已发布
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.