{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Roasting of gold and silver ores, and the extraction of their respective metals without quicksilver","author_name":"Küstel, G","thumbnail_url":"https://www.ebooknetworking.net/books/B00/B3L/bigB00B3L75F8.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00B3L75F8.html\">Roasting of gold and silver ores, and the extraction of their respective metals without quicksilver</a>","width":400,"height":300}