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"While we've known the app was coming for at least a month now, The John Lennon Letters finally landed in the App Store this week, three months after the hardback book rolled out, bringing ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2012/12/14/appy-xmas-the-john-lennon-letters-app-launches-for-ipad/>