Computer Called LEO, Lyons Tea Shops and the world’s first office computer (Text Only), HarperCollins Publishers, Georgina Ferry,European history,History, Lyons;John Simmons;LEO,, , United Kingdom, en-GBhttps://www.harpercollins.co.ukLyons;John Simmons;LEO, [BLURB],[CITY],,books, ebooks, biblet, Book2look