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Symmes's Theory of Concentric Spheres
James McBrideJohn Cleves Symmes
其他書名
Demonstrating that the Earth is Hollow, Habitable Within, and Widely Open about the Poles
出版Morgan, Lodge and Fisher, 1826
URLhttp://books.google.com.hk/books?id=fi9bAAAAcAAJ&hl=&source=gbs_api
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