{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Bibliography of Theses on Mining in U. S. Institutions and Longwall Mining of Oil Shale, 1956, Quarterly of the Colorado School of Mines, Volume 51, Number 2 : 81 pages.","author_name":"H. L. et al. Hartman","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002NLMQMY.html\">Bibliography of Theses on Mining in U. S. Institutions and Longwall Mining of Oil Shale, 1956, Quarterly of the Colorado School of Mines, Volume 51, Number 2 : 81 pages.</a>","width":400,"height":300}