{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Symmes's Theory of Concentric Spheres: Demonstrating that the Earth is Hollow, Habitable Within, and Widely Open about the Poles","author_name":"John Cleves Symmes","thumbnail_url":"https://www.ebooknetworking.net/books/B00/KS9/bigB00KS9CENY.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00KS9CENY.html\">Symmes&#039;s Theory of Concentric Spheres: Demonstrating that the Earth is Hollow, Habitable Within, and Widely Open about the Poles</a>","width":400,"height":300}