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Geology Explained in North Wales, by John Challinor and Denis E.B. Bates. With a Chapter by E.G. Bowen

John ChallinorDenis Edwin Beeching Bates

出版	David & Charles, 1973
URL	http://books.google.com.hk/books?id=-E76cQAACAAJ&hl=&source=gbs_api