{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Tunnels & Caverns: Looking Back at Forty Years In Underground Construction & Estimating","author_name":"Harry Hilton","thumbnail_url":"https://www.ebooknetworking.net/books/149/903/big1499036469.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1499036469.html\">Tunnels &amp; Caverns: Looking Back at Forty Years In Underground Construction &amp; Estimating</a>","width":400,"height":300}