{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A treatise of plane trigonometry,and the mensuration of heights and distances. To which is prefixed a summary view of the nature and use of ... in schools and academies, by Jeremiah Day.","author_name":"Michigan Historical Reprint Series","thumbnail_url":"https://www.ebooknetworking.net/books/142/553/big1425534856.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1425534856.html\">A treatise of plane trigonometry,and the mensuration of heights and distances. To which is prefixed a summary view of the nature and use of ... in schools and academies, by Jeremiah Day.</a>","width":400,"height":300}