{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Complete System of Mental Arithmetic: Embracing Every Variety of Commercial Calculation Necessary for the Counting-House and Shop","author_name":"James Ferguson","thumbnail_url":"https://www.ebooknetworking.net/books/114/149/big1141494698.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1141494698.html\">A Complete System of Mental Arithmetic: Embracing Every Variety of Commercial Calculation Necessary for the Counting-House and Shop</a>","width":400,"height":300}