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Geology of the Chesapeake and Ohio Canal National Historical Park and Potomac River Corridor, District of Columbia, Maryland, West Virginia, and Virginia
Scott Southworth
出版U.S. Geological Survey, 2008
ISBN14113201079781411320109
URLhttp://books.google.com.hk/books?id=V-8kjTdFKIkC&hl=&source=gbs_api
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