{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Heat-treatment of steel; a comprehensive treatise on the hardening, tempering, annealing and casehardening of various kinds of steel, including ... chapters on heat-treating furnaces and on h","author_name":"Erik Oberg","thumbnail_url":"https://www.ebooknetworking.net/books/115/388/big1153880245.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1153880245.html\">Heat-treatment of steel; a comprehensive treatise on the hardening, tempering, annealing and casehardening of various kinds of steel, including ... chapters on heat-treating furnaces and on h</a>","width":400,"height":300}