{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Curve tracing in Cartesian coordinates, by William Woolsey Johnson.","author_name":"Michigan Historical Reprint Series","thumbnail_url":"https://www.ebooknetworking.net/books/141/817/big1418178799.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1418178799.html\">Curve tracing in Cartesian coordinates, by William Woolsey Johnson.</a>","width":400,"height":300}