{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Gold and Silver: Comprising an Economic History of Mining in the United States, the Geographical and Geological Occurrence of the Precious Metals, ... of Methods of Mining and Extraction of Values","author_name":"Walter Richard Crane","thumbnail_url":"https://www.ebooknetworking.net/books/114/762/big1147623910.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1147623910.html\">Gold and Silver: Comprising an Economic History of Mining in the United States, the Geographical and Geological Occurrence of the Precious Metals, ... of Methods of Mining and Extraction of Values</a>","width":400,"height":300}