{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity","author_name":"Steven Weinberg","thumbnail_url":"https://www.ebooknetworking.net/books/047/192/big0471925675.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0471925675.html\">Gravitation and Cosmology: Principles and Applications of the General Theory of Relativity</a>","width":400,"height":300}