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Date: 2013-11-04 12:20:24Earth Obsolete scientific theories Hollow Earth Subterranea Geodesy Leonhard Euler Precession Euler Society Astronomy Figure of the Earth Euler John Cleves Symmes Jr. | How Euler Did It by Ed Sandifer Euler and the Hollow Earth: Fact or Fiction? AprilIs the earth hollow? Is there a sun 600 miles in diameter at the center of the hollow earth? Is theAdd to Reading ListSource URL: eulerarchive.maa.orgDownload Document from Source WebsiteFile Size: 832,86 KBShare Document on Facebook |