{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"International Symposium on Underground Openings: Lucerne 1972","author_name":"H. & Kovari,K. Grob","thumbnail_url":"https://www.ebooknetworking.net/books/B00/4OV/bigB004OVWB2Q.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B004OVWB2Q.html\">International Symposium on Underground Openings: Lucerne 1972</a>","width":400,"height":300}