{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Dr. Euler's Fabulous Formula: Cures Many Mathematical Ills","author_name":"Paul J. Nahin","thumbnail_url":"https://www.ebooknetworking.net/books/069/111/big0691118221.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0691118221.html\">Dr. Euler&#039;s Fabulous Formula: Cures Many Mathematical Ills</a>","width":400,"height":300}