{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Earthwork Mensuration On The Basis Of The Prismoidal Formula: Containing A Simple And Labor-Saving Method Of Obtaining Prismoidal Contents Directly From End Areas","author_name":"Conway R. Howard","thumbnail_url":"https://www.ebooknetworking.net/books/054/847/big0548473889.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0548473889.html\">Earthwork Mensuration On The Basis Of The Prismoidal Formula: Containing A Simple And Labor-Saving Method Of Obtaining Prismoidal Contents Directly From End Areas</a>","width":400,"height":300}