{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Light, photometry and illumination; a thoroughly rev. ed. of \"Electrical illuminating engineering\"","author_name":"Barrows William Edward","thumbnail_url":"https://www.ebooknetworking.net/books/111/320/big1113206012.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1113206012.html\">Light, photometry and illumination; a thoroughly rev. ed. of &quot;Electrical illuminating engineering&quot;</a>","width":400,"height":300}