{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Proceedings of the International Workshop on Rock Mass Classification in Underground Mining","author_name":"Department of Health and Human Services","thumbnail_url":"https://www.ebooknetworking.net/books/149/351/big1493512137.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1493512137.html\">Proceedings of the International Workshop on Rock Mass Classification in Underground Mining</a>","width":400,"height":300}