{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Treatise on Surveying. Containing the Theory and Pracitce to which is Prefixed a Perspicuous System of Plane Trigonometry","author_name":"John Gummere","thumbnail_url":"https://www.ebooknetworking.net/books/noimage.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B007BOXFG4.html\">Treatise on Surveying. Containing the Theory and Pracitce to which is Prefixed a Perspicuous System of Plane Trigonometry</a>","width":400,"height":300}