{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Vacuum Tubes in Wireless Communication: A Practical Text Book for Operators and Experimenters","author_name":"Elmer Eustice Bucher","thumbnail_url":"https://www.ebooknetworking.net/books/114/126/big1141262428.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1141262428.html\">Vacuum Tubes in Wireless Communication: A Practical Text Book for Operators and Experimenters</a>","width":400,"height":300}