{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Calculating Companion for the Slide Rule: Containing Instructions for Its Application to Calculations of Leverage, Mensuration of Superfices, Solids,","author_name":"James L. Rowland,","thumbnail_url":"https://www.ebooknetworking.net/books/116/186/big1161866531.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1161866531.html\">Calculating Companion for the Slide Rule: Containing Instructions for Its Application to Calculations of Leverage, Mensuration of Superfices, Solids,</a>","width":400,"height":300}