{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Source Book in Mathematics, 1200-1800 (Princeton Legacy Library)","author_name":"Dirk Jan Struik","thumbnail_url":"https://www.ebooknetworking.net/books/069/161/big0691610517.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0691610517.html\">A Source Book in Mathematics, 1200-1800 (Princeton Legacy Library)</a>","width":400,"height":300}