{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Flame-arresting limitations of flat joints and plain bearings in explosion-proof mine equipment","author_name":"E. J. Gleim","thumbnail_url":"https://www.ebooknetworking.net/books/B00/427/bigB00427YX9G.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00427YX9G.html\">Flame-arresting limitations of flat joints and plain bearings in explosion-proof mine equipment</a>","width":400,"height":300}