{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Gauss, les deux Bolyai et la géométrie non euclidienne (French Edition)","author_name":"Friedrich, 1861-1941, . Engel","thumbnail_url":"https://www.ebooknetworking.net/books/B00/5HJ/bigB005HJBRI8.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B005HJBRI8.html\">Gauss, les deux Bolyai et la géométrie non euclidienne (French Edition)</a>","width":400,"height":300}