{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Vacuum Tube Circuit Design: Guitar Amplifier Preamps, Second Edition","author_name":"Richard Kuehnel,","thumbnail_url":"https://www.ebooknetworking.net/books/097/698/big0976982269.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0976982269.html\">Vacuum Tube Circuit Design: Guitar Amplifier Preamps, Second Edition</a>","width":400,"height":300}