{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"An Elementary Treatise on Plane and Spherical Trigonometry, with applications to navigation, surveying, heights and distances, and spherical astronomy","author_name":"Benjamin Pierce","thumbnail_url":"https://www.ebooknetworking.net/books/142/554/big1425540201.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1425540201.html\">An Elementary Treatise on Plane and Spherical Trigonometry, with applications to navigation, surveying, heights and distances, and spherical astronomy</a>","width":400,"height":300}