{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Worm and Spiral Gearing - Gear Design and Engineering","author_name":"Frederick A. Halsey","thumbnail_url":"https://www.ebooknetworking.net/books/192/914/big1929148313.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1929148313.html\">Worm and Spiral Gearing - Gear Design and Engineering</a>","width":400,"height":300}