{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Modern high-end valve amplifiers: Based on toroidal output transformers","author_name":"Menno van der Veen","thumbnail_url":"https://www.ebooknetworking.net/books/090/570/big0905705637.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0905705637.html\">Modern high-end valve amplifiers: Based on toroidal output transformers</a>","width":400,"height":300}