{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Problem Book in Relativity and Gravitation","author_name":"Alan P. Lightman, William H. Press, Richard H. Price, Saul A. Teukolsky","thumbnail_url":"https://www.ebooknetworking.net/books/069/108/big069108162X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-069108162X.html\">Problem Book in Relativity and Gravitation</a>","width":400,"height":300}