{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Railway \"block\" signalling. The principles of train signalling & apparatus for ensuring safety","author_name":"James Pigg","thumbnail_url":"https://www.ebooknetworking.net/books/B00/2ZV/bigB002ZVPX18.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002ZVPX18.html\">Railway &quot;block&quot; signalling. The principles of train signalling &amp; apparatus for ensuring safety</a>","width":400,"height":300}