{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Cathedral, Forge, and Waterwheel: Technology and Invention in the Middle Ages","author_name":"Frances Gies, Joseph Gies","thumbnail_url":"https://www.ebooknetworking.net/books/006/016/big0060165901.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0060165901.html\">Cathedral, Forge, and Waterwheel: Technology and Invention in the Middle Ages</a>","width":400,"height":300}