{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Plane trigonometry, mensuration, and spherical trigonometry","author_name":"Twisden, John Francis","thumbnail_url":"https://www.ebooknetworking.net/books/117/754/big1177541149.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1177541149.html\">Plane trigonometry, mensuration, and spherical trigonometry</a>","width":400,"height":300}