{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Principles of Direct Current Machines (Classic Reprint)","author_name":"Alexander S. Langsdorf","thumbnail_url":"https://www.ebooknetworking.net/books/133/112/big1331129087.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1331129087.html\">Principles of Direct Current Machines (Classic Reprint)</a>","width":400,"height":300}