{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Principles of Mining - (With Index and Illustrations)Valuation, Organization and Administration. Copper, Gold, Lead, Silver, Tin and Zinc.","author_name":"Herbert Hoover","thumbnail_url":"https://www.ebooknetworking.net/books/184/902/big1849024383.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1849024383.html\">Principles of Mining - (With Index and Illustrations)Valuation, Organization and Administration. Copper, Gold, Lead, Silver, Tin and Zinc.</a>","width":400,"height":300}