{"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 Qualifying For Mine Foreman And Mine Inspector Certificates","author_name":"Joseph James Walsh","thumbnail_url":"https://www.ebooknetworking.net/books/B00/7JR/bigB007JR5BQK.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B007JR5BQK.html\">Mining And Mine Ventilation: A Practical Handbook On The Physics And Chemistry Of Mining And Mine Ventilation For Vocational Schools, And For Those Qualifying For Mine Foreman And Mine Inspector Certificates</a>","width":400,"height":300}