描述
Explains the sources of energy that make some things work, including springs and gravity, and suggests simple experiments that reveal the basic principles of energy
书籍详情
格式
平装书
页数
32 页
语言
英语
已发布
Jul 1, 1994
出版商
Gareth Stevens Pub
ISBN-10
0836811224
ISBN-13
9780836811223