{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Plane and solid geometry. To which is added plane and spherical trigonometry and mensuration. Accompanied with all the necessary logarithmic and trigonometric tables. By George R. Perkins, LL. D.","author_name":"Michigan Historical Reprint Series","thumbnail_url":"https://www.ebooknetworking.net/books/142/555/big142555086X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-142555086X.html\">Plane and solid geometry. To which is added plane and spherical trigonometry and mensuration. Accompanied with all the necessary logarithmic and trigonometric tables. By George R. Perkins, LL. D.</a>","width":400,"height":300}