{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Nevada and California processes of silver and gold extraction ...: with full explanations and directions for all metallurgical operations connected with silver and gold ...","author_name":"Guido Küstel","thumbnail_url":"https://www.ebooknetworking.net/books/127/569/big1275693989.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1275693989.html\">Nevada and California processes of silver and gold extraction ...: with full explanations and directions for all metallurgical operations connected with silver and gold ...</a>","width":400,"height":300}