{"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/B00/YPR/bigB00YPRW188.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B00YPRW188.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}