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Google圖書搜尋
Making Water Clean
Rebecca Olien
出版
Capstone
, 2005
主題
Juvenile Nonfiction / Science & Nature / Earth Sciences / Water (Oceans, Lakes, etc.)
Science / General
Technology & Engineering / Environmental / General
ISBN
0736837035
9780736837033
URL
http://books.google.com.hk/books?id=5E3drrBppBUC&hl=&source=gbs_api
EBook
SAMPLE
註釋
Describes how cities treat freshwater so that it is safe to drink. Includes an activity.