{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Cooperative Coal Mining Series, Volumes 16-18","author_name":"United States. Bureau Of Mines, Illinois State Geological Survey, University Of Illinois. Engineering Experiment Station","thumbnail_url":"https://www.ebooknetworking.net/books/B00/A30/bigB00A3047KG.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00A3047KG.html\">Cooperative Coal Mining Series, Volumes 16-18</a>","width":400,"height":300}