{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Practical and Theoretical System of Arithmetic...: Also, a Treatise On Mensuration, and a Brief Practical System of Book-Keeping","author_name":"George Willson","thumbnail_url":"https://www.ebooknetworking.net/books/114/761/big1147617694.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1147617694.html\">A Practical and Theoretical System of Arithmetic...: Also, a Treatise On Mensuration, and a Brief Practical System of Book-Keeping</a>","width":400,"height":300}