{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Treatise on Surveying Containing the Theory and Practice to Which is Prefixed a Perspicuous System of Plane Trigonometry","author_name":"John Gummere","thumbnail_url":"https://www.ebooknetworking.net/books/B00/2KW/bigB002KW4SJ0.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002KW4SJ0.html\">A Treatise on Surveying Containing the Theory and Practice to Which is Prefixed a Perspicuous System of Plane Trigonometry</a>","width":400,"height":300}