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Activities in the Earth Sciences

Helen J. Challand

出版	Childrens Press, 1982
主題	Juvenile Nonfiction / GeneralJuvenile Nonfiction / Science & Nature / Earth Sciences / GeneralJuvenile Nonfiction / Science & Nature / Experiments & ProjectsScience / Earth Sciences / General
ISBN	05160050659780516005065
URL	http://books.google.com.hk/books?id=tT81V0DTZ_UC&hl=&source=gbs_api

註釋

Activities and experiments--such as making charcoal, measuring shadows, and calculating the speed of sound--in the areas of astronomy, weather, and geology.