{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Treatise On Spherical Trigonometry, and Its Application to Geodesy and Astronomy","author_name":"John Casey","thumbnail_url":"https://www.ebooknetworking.net/books/114/616/big1146164769.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1146164769.html\">A Treatise On Spherical Trigonometry, and Its Application to Geodesy and Astronomy</a>","width":400,"height":300}