{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Communications receivers: The vacuum tube era : 50 glorious years, 1932-1981","author_name":"Raymond S Moore","thumbnail_url":"https://www.ebooknetworking.net/books/096/188/big0961888202.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0961888202.html\">Communications receivers: The vacuum tube era : 50 glorious years, 1932-1981</a>","width":400,"height":300}