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Gravity

Ben Morgan

出版	Blackbirch Press, 2003
主題	Juvenile Nonfiction / Science & Nature / Earth Sciences / Water (Oceans, Lakes, etc.)Juvenile Nonfiction / Science & Nature / PhysicsScience / Physics / GravityScience / Earth Sciences / Oceanography
ISBN	14103008119781410300812
URL	http://books.google.com.hk/books?id=GG8UjmabA8sC&hl=&source=gbs_api

註釋

Gravity affects everything on the planet, understanding it is one of the keys to understanding our world.