{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Elements of Plane and Spherical Trigonometry with Logarithmic and Other Mathematical Tables and Exam","author_name":"Simon Newcomb","thumbnail_url":"https://www.ebooknetworking.net/books/111/308/big1113082569.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1113082569.html\">Elements of Plane and Spherical Trigonometry with Logarithmic and Other Mathematical Tables and Exam</a>","width":400,"height":300}