{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Annual report of research and technologic work on coal: Fiscal year 1949","author_name":"Arno Carl Fieldner","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3YK/bigB003YKG8C2.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003YKG8C2.html\">Annual report of research and technologic work on coal: Fiscal year 1949</a>","width":400,"height":300}