{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Practice of Refraction (Churchill\"s Empire series) Third Edition","author_name":"Sir Stewart Duke-Elder","thumbnail_url":"https://www.ebooknetworking.net/books/B00/26P/bigB0026PJ2NS.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B0026PJ2NS.html\">The Practice of Refraction (Churchill&quot;s Empire series) Third Edition</a>","width":400,"height":300}