{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Methods of Mathematical Physics","author_name":"Harold Jeffreys","thumbnail_url":"https://www.ebooknetworking.net/books/140/673/big1406737003.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1406737003.html\">Methods of Mathematical Physics</a>","width":400,"height":300}