描述
Do you know what a lever is? How can a lever help you? Through simple experiments and clear explanations, understand how this simple machine functions and how it can make the work that you do easier.
書籍詳情
格式
電子書
頁數
47 頁
語言
英語
已出版
Aug 23, 2011
出版商
Lerner Publishing Group
版本
3 editions
ISBN-10
1281280836
ISBN-13
9781281280831