{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Design of Underground Installations in Rock Space Layouts & Excavation Methods Engineering & Design Em 1110 345 433","author_name":"CORPS OF ENGINEERS WASHINGTON DC","thumbnail_url":"https://www.ebooknetworking.net/books/B00/50G/bigB0050GHO5S.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0050GHO5S.html\">Design of Underground Installations in Rock Space Layouts &amp; Excavation Methods Engineering &amp; Design Em 1110 345 433</a>","width":400,"height":300}