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Mountains and Valleys

Steve Parker

出版	Thunder Bay Press, 1996
主題	Juvenile Nonfiction / Science & Nature / GeneralJuvenile Nonfiction / Science & Nature / Environmental Science & EcosystemsJuvenile Nonfiction / Science & Nature / Experiments & ProjectsJuvenile Nonfiction / Science & Nature / Earth Sciences / Geography
ISBN	15714502629781571450265
URL	http://books.google.com.hk/books?id=mz5b9owAP_cC&hl=&source=gbs_api

註釋

The seemingly still mountains are actually always moving. Find out how important valleys were to early farmers and traders. See how plants and animals have adapted to the challenge of living at the top of the world, and discover the dangers facing mountain wildlife today.