{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Guide to the Use of Rock Reinforcement in Underground Excavations","author_name":"T.H. Douglas, L.J. Artur","thumbnail_url":"https://www.ebooknetworking.net/books/086/017/big0860172120.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0860172120.html\">Guide to the Use of Rock Reinforcement in Underground Excavations</a>","width":400,"height":300}