{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Principles And Methods Of Geometrical Optics, Especially As Applied To The Theory Of Optical Instruments","author_name":"James P. C. Southall","thumbnail_url":"https://www.ebooknetworking.net/books/116/387/big116387437X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-116387437X.html\">The Principles And Methods Of Geometrical Optics, Especially As Applied To The Theory Of Optical Instruments</a>","width":400,"height":300}