{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Ultra Secret: The Inside Story of Operation Ultra, Bletchley Park and Enigma (Weidenfeld & Nicolson 50th Years)","author_name":"F.W. Winterbotham","thumbnail_url":"https://www.ebooknetworking.net/books/029/764/big029764405X.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-029764405X.html\">The Ultra Secret: The Inside Story of Operation Ultra, Bletchley Park and Enigma (Weidenfeld &amp; Nicolson 50th Years)</a>","width":400,"height":300}