{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Physics and Chemistry of Mining and Mine Ventilation: A Practical Handbook for Vocational Schools, and for Those Qualifying for Mine Foreman and Mine Inspector Certificates (Classic Reprint)","author_name":"Joseph J. Walsh","thumbnail_url":"https://www.ebooknetworking.net/books/B00/8OZ/bigB008OZMYES.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B008OZMYES.html\">Physics and Chemistry of Mining and Mine Ventilation: A Practical Handbook for Vocational Schools, and for Those Qualifying for Mine Foreman and Mine Inspector Certificates (Classic Reprint)</a>","width":400,"height":300}