{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Mathematical Constants (Encyclopedia of Mathematics and its Applications)","author_name":"Steven R. Finch","thumbnail_url":"https://www.ebooknetworking.net/books/052/181/big0521818052.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0521818052.html\">Mathematical Constants (Encyclopedia of Mathematics and its Applications)</a>","width":400,"height":300}