{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Railway Signal Engineering in the Mechanical Era","author_name":"L. P. Lewis","thumbnail_url":"https://www.ebooknetworking.net/books/095/635/big0956358586.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0956358586.html\">Railway Signal Engineering in the Mechanical Era</a>","width":400,"height":300}