{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Mining and Mine Ventilation: A Practical Handbook On the Physics and Chemistry of Mining and Mine Ventilation for Vocational Schools, and for Those ... Certificates - Primary Source Edition","author_name":"Joseph James Walsh","thumbnail_url":"https://www.ebooknetworking.net/books/129/326/big1293265462.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1293265462.html\">Mining and Mine Ventilation: A Practical Handbook On the Physics and Chemistry of Mining and Mine Ventilation for Vocational Schools, and for Those ... Certificates - Primary Source Edition</a>","width":400,"height":300}