{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The World of Sound: Six Lectures Delivered Before a Juvenile Auditory at the Royal Institution, Christmas, 1919 (1920 )","author_name":"Bragg, Sir William Henry","thumbnail_url":"https://www.ebooknetworking.net/books/111/253/big1112533095.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1112533095.html\">The World of Sound: Six Lectures Delivered Before a Juvenile Auditory at the Royal Institution, Christmas, 1919 (1920 )</a>","width":400,"height":300}