{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Projective Differential Geometry of Curves and Ruled Surfaces (Classic Reprint)","author_name":"Ernest Julius Wilczynski","thumbnail_url":"https://www.ebooknetworking.net/books/B00/8IJ/bigB008IJM24C.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B008IJM24C.html\">Projective Differential Geometry of Curves and Ruled Surfaces (Classic Reprint)</a>","width":400,"height":300}