{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Review of literature on conditioning air for advancement of health and safety in mines (Information circular / United States Department of the Interior, Bureau of Mines)","author_name":"D Harrington","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0008BIEIQ.html\">Review of literature on conditioning air for advancement of health and safety in mines (Information circular / United States Department of the Interior, Bureau of Mines)</a>","width":400,"height":300}