{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Mathematical Instruments: Drawing and Measuring Instruments","author_name":"John Fry Heather","thumbnail_url":"https://www.ebooknetworking.net/books/114/717/big1147171831.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1147171831.html\">Mathematical Instruments: Drawing and Measuring Instruments</a>","width":400,"height":300}