{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Treatise on Toothed Gearing. Containing Complete Instructions for Designing, Drawing, and Constructing Spur Wheels, Bevel Wheels, Laterns Gear, ... for the Use of Machinists, Pattern-maker","author_name":"John Howard Cromwell","thumbnail_url":"https://www.ebooknetworking.net/books/129/017/big1290172951.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1290172951.html\">A Treatise on Toothed Gearing. Containing Complete Instructions for Designing, Drawing, and Constructing Spur Wheels, Bevel Wheels, Laterns Gear, ... for the Use of Machinists, Pattern-maker</a>","width":400,"height":300}