{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Method Of Determining The Radiant Luminous Efficiency Of A Light Source By Means Of A Cell Whose Transmission Curve Is Identical With The Luminosity Curve Of The Average Eye ...","author_name":"Enoch Karrer","thumbnail_url":"https://www.ebooknetworking.net/books/124/501/big124501143X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-124501143X.html\">A Method Of Determining The Radiant Luminous Efficiency Of A Light Source By Means Of A Cell Whose Transmission Curve Is Identical With The Luminosity Curve Of The Average Eye ...</a>","width":400,"height":300}