{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Practical Problems in Mathematics for Masons","author_name":"John Ball, Robert Benjamin Ham, Donna B. Ham","thumbnail_url":"https://www.ebooknetworking.net/books/113/301/big1133014747.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1133014747.html\">Practical Problems in Mathematics for Masons</a>","width":400,"height":300}