描述
Students try to communicate with intelligent life beyond our solar system, take a trip to Mars, and predict changes that will occur on Earth during the next 50 million years.
书籍详情
格式
平装书
页数
96 页
语言
英语
已发布
Oct 1, 1997
出版商
Teacher Created Resources
ISBN-10
1576901076
ISBN-13
9781576901076