{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A descriptive treatise on mathematical drawing instruments: their construction, uses, qualities, selection, preservation, and suggestions for improvements, with hints upon drawing and colouring","author_name":"William Ford Robinson Stanley","thumbnail_url":"https://www.ebooknetworking.net/books/117/767/big1177679752.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1177679752.html\">A descriptive treatise on mathematical drawing instruments: their construction, uses, qualities, selection, preservation, and suggestions for improvements, with hints upon drawing and colouring</a>","width":400,"height":300}