{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A synopsis of practical mathematics: Containing plain trigonometry; mensuration of heights, distances, surfaces, and solids; surveying of land, ... of numbers and of sines and tangents","author_name":"Alexander Ewing","thumbnail_url":"https://www.ebooknetworking.net/books/B00/385/bigB00385XA4C.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00385XA4C.html\">A synopsis of practical mathematics: Containing plain trigonometry; mensuration of heights, distances, surfaces, and solids; surveying of land, ... of numbers and of sines and tangents</a>","width":400,"height":300}