{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Sulfur hexafluoride as a mine ventilation research tool : recent field applications","author_name":"Robert J. Timko","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3HK/bigB003HKRFSK.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003HKRFSK.html\">Sulfur hexafluoride as a mine ventilation research tool : recent field applications</a>","width":400,"height":300}