{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Myth about Spiral Curve Offsets: Step by Step Guide (Surveying Mathematics Made Simple) (Volume 7)","author_name":"Jim Crume","thumbnail_url":"https://www.ebooknetworking.net/books/149/379/big1493790374.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1493790374.html\">The Myth about Spiral Curve Offsets: Step by Step Guide (Surveying Mathematics Made Simple) (Volume 7)</a>","width":400,"height":300}