{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"General Relativity: 1972 Lecture Notes (Lecture Notes Series) (Volume 1)","author_name":"Robert Geroch","thumbnail_url":"https://www.ebooknetworking.net/books/098/798/big0987987178.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0987987178.html\">General Relativity: 1972 Lecture Notes (Lecture Notes Series) (Volume 1)</a>","width":400,"height":300}