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沙子

Ellen J. Prager普拉格

出版	秋雨文化事業股份有限公司, 2004
ISBN	98676805029789867680501
URL	http://books.google.com.hk/books?id=tvo4IAcJDDIC&hl=&source=gbs_api

註釋

Describes the formation of sand from materials such as coral, rock, or crystals and shows how it can be moved through water, wind, ice, and other erosion agents.