cs. New Ed. Oxford Paperbacks, 1999. Petzold, Charles. The Annotated Turing: A Guided Tour Through Alan Turing’s Historic Paper on Computability and the Turing Machine. John Wiley & Sons, 2008. Sacks, Oliver. Musicophilia: Tales of Music and the Brain. Reprint. Picador, 2008. Singh, Simon. The Code Book: The Secre