{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Treatise On Spherical Trigonometry - Its Application To Geodesy And Astronomy","author_name":"John Casey","thumbnail_url":"https://www.ebooknetworking.net/books/193/399/big1933998741.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1933998741.html\">A Treatise On Spherical Trigonometry - Its Application To Geodesy And Astronomy</a>","width":400,"height":300}