{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Origin, Nature and Influence of Relativity: Lowell Institute Lectures","author_name":"George David Birkhoff","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B000M4J9C4.html\">Origin, Nature and Influence of Relativity: Lowell Institute Lectures</a>","width":400,"height":300}