{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Lectures On The Errors Of Refraction And Their Correction With Glasses: Delivered At The New York Post-graduate Medical School, With Illustrative Cases From Practice, Both Private And Clinical...","author_name":"Francis Valk","thumbnail_url":"https://www.ebooknetworking.net/books/127/937/big1279371293.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1279371293.html\">Lectures On The Errors Of Refraction And Their Correction With Glasses: Delivered At The New York Post-graduate Medical School, With Illustrative Cases From Practice, Both Private And Clinical...</a>","width":400,"height":300}