{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Elementary Theory and Calculation of iron Bridges and Roofs","author_name":"August Ritter","thumbnail_url":"https://www.ebooknetworking.net/books/111/701/big1117015068.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1117015068.html\">Elementary Theory and Calculation of iron Bridges and Roofs</a>","width":400,"height":300}