{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A general treatise of mensuration: containing many useful and necessary improvements. Composed for the benefit of artificers, builders, measurers, ... ... The second edition, with many additions.","author_name":"J. Robertson","thumbnail_url":"https://www.ebooknetworking.net/books/114/067/big1140674676.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1140674676.html\">A general treatise of mensuration: containing many useful and necessary improvements. Composed for the benefit of artificers, builders, measurers, ... ... The second edition, with many additions.</a>","width":400,"height":300}