{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"An Elementary Text-Book on the Differential and Integral Calculus [ 1902 ]","author_name":"William Holding Echols","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1112336915.html\">An Elementary Text-Book on the Differential and Integral Calculus [ 1902 ]</a>","width":400,"height":300}