描述
"Presents information on simple machines with a focus on screws. Explains what a screw is, how screws work, and includes examples of past and present uses. Intended for third to fifth grade students"--Provided by publisher.
书籍详情
格式
平装书
页数
24 页
语言
英语
已发布
1月 1, 2009
出版商
Weigl Pub Inc
ISBN-10
160596039X
ISBN-13
9781605960395