{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A History of the Photographic Lens","author_name":"Rudolf Kingslake","thumbnail_url":"https://www.ebooknetworking.net/books/012/408/big0124086403.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0124086403.html\">A History of the Photographic Lens</a>","width":400,"height":300}