{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Slide Rule, And How To Use It: Containing Full,Easy And Simple Instructions To Perform All Business Calculations With Unexampled Rapidity And Accuracy (1868)","author_name":"Charles Hoare","thumbnail_url":"https://www.ebooknetworking.net/books/143/737/big1437371647.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1437371647.html\">The Slide Rule, And How To Use It: Containing Full,Easy And Simple Instructions To Perform All Business Calculations With Unexampled Rapidity And Accuracy (1868)</a>","width":400,"height":300}