{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Spiral and worm gearing; a treatise on the principles, dimensions, calculations and design of spiral and worm gearing, together with chapters on the methods of cutting the teeth in these types of gears.","author_name":"Author","thumbnail_url":"https://www.ebooknetworking.net/books/B00/3OB/bigB003OBC28K.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B003OBC28K.html\">Spiral and worm gearing; a treatise on the principles, dimensions, calculations and design of spiral and worm gearing, together with chapters on the methods of cutting the teeth in these types of gears.</a>","width":400,"height":300}