{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Bridge Engineering; Roof Trusses a Manual of Practical Instruction in the Calculation and Design of Steel Truss and Girder Bridges for Railroads and H","author_name":"American School of Correspondence","thumbnail_url":"https://www.ebooknetworking.net/books/123/594/big1235946770.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1235946770.html\">Bridge Engineering; Roof Trusses a Manual of Practical Instruction in the Calculation and Design of Steel Truss and Girder Bridges for Railroads and H</a>","width":400,"height":300}