{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Magnetic Fields: A Comprehensive Theoretical Treatise for Practical Use","author_name":"Heinz E. Knoepfel","thumbnail_url":"https://www.ebooknetworking.net/books/047/132/big0471322059.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0471322059.html\">Magnetic Fields: A Comprehensive Theoretical Treatise for Practical Use</a>","width":400,"height":300}