{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Gravity: An Introduction to Einstein's General Relativity","author_name":"James B. Hartle","thumbnail_url":"https://www.ebooknetworking.net/books/080/538/big0805386629.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0805386629.html\">Gravity: An Introduction to Einstein&#039;s General Relativity</a>","width":400,"height":300}