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River Runners of the Grand Canyon

David Lavender

出版	Grand Canyon Natural History Association, 1985
主題	History / GeneralTravel / Parks & CampgroundsTravel / United States / West / Mountain (AZ, CO, ID, MT, NM, NV, UT, WY)
ISBN	08165094099780816509409
URL	http://books.google.com.hk/books?id=v6R5AAAAMAAJ&hl=&source=gbs_api