{"product_id":"symmess-theory-of-concentric-spheres","title":"Symmes's Theory of Concentric Spheres","description":"\u003cp\u003eSymmes's Theory of Concentric Spheres is a compelling exploration of the eccentric theories posited by John Cleves Symmes Jr. in the early 19th century, written by the insightful James McBride. At the heart of the book lies Symmes's audacious hypothesis t\u003c\/p\u003e","brand":"Booksclassic","offers":[{"title":"Paperback","offer_id":49495702667568,"sku":"9609441194975","price":7.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0262\/2357\/5085\/files\/9609441194975.jpg?v=1738256657","url":"https:\/\/www.thegreatbritishbookshop.co.uk\/products\/symmess-theory-of-concentric-spheres","provider":"The Great British Bookshop","version":"1.0","type":"link"}