Protecting Earth's Air Quality-这本书不错哟,强烈推荐!


Protecting Earth's Air Quality

作者 (Author) Rapp, Valerie
等级 (MML) MM LEVEL: 6.4
年级 (IL) Medium Grades (MG 4-8)
字数 (Words) 11018
类型 (Fiction) Non-Fiction
书号 (ISBN) 9780822575580
系列 (Series) Saving Our Living Earth;
This book explores the causes of current environmental problems, particularly air quality, and discusses new trends, technology, and new solutions.

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