50 simple things kids can do to save the earth

Explains how specific things in a child's environment are connected to the rest of the world, how using them affects the planet, and how the individual can develop habits and projects that are environmentally sound.

書目詳細資料
其他作者: Earth Works Group (Estados Unidos)
格式: Libro
出版: Kansas City Andrews and McMeel [1990]
主題:

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