{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"On the Geometry of External Involute Spur Gears","author_name":"T. W. Khiralla","thumbnail_url":"https://www.ebooknetworking.net/books/096/017/big0960175210.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0960175210.html\">On the Geometry of External Involute Spur Gears</a>","width":400,"height":300}