{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Direct-Current Machine Design: Being Instructions for the Design of Motors and Generators","author_name":"Francis Bacon Crocker","thumbnail_url":"https://www.ebooknetworking.net/books/055/446/big0554460750.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0554460750.html\">Direct-Current Machine Design: Being Instructions for the Design of Motors and Generators</a>","width":400,"height":300}