{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Seven-figure logarithms of numbers from 1 to 108000; and of sines, cosines, tangents, cotangents to every 10 seconds of the quadrant, with a table of proportional parts","author_name":"Heinrich Ludwig Friedrich Schron","thumbnail_url":"https://www.ebooknetworking.net/books/123/016/big1230164804.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1230164804.html\">Seven-figure logarithms of numbers from 1 to 108000; and of sines, cosines, tangents, cotangents to every 10 seconds of the quadrant, with a table of proportional parts</a>","width":400,"height":300}