{"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 1951","author_name":"R. L. Brown","thumbnail_url":"https://www.ebooknetworking.net/books/B00/2WR/bigB002WRGSKK.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002WRGSKK.html\">Annual report of research and technologic work on coal: Fiscal year 1951</a>","width":400,"height":300}