{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"A Manual of Telegraph Construction: The Mechanical Elements of Electric Telegraph Engineering [1877]","author_name":"John Christie Douglas","thumbnail_url":"https://www.ebooknetworking.net/books/111/258/big1112583661.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-1112583661.html\">A Manual of Telegraph Construction: The Mechanical Elements of Electric Telegraph Engineering [1877]</a>","width":400,"height":300}