{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Suggested minimum performance specifications for underground coal mine environmental monitoring systems","author_name":"Jeffrey H. Welsh","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3HI/bigB003HIX6B2.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003HIX6B2.html\">Suggested minimum performance specifications for underground coal mine environmental monitoring systems</a>","width":400,"height":300}