Revision history for entry Penrose, Roger (1990). "Precis of the emperor's new mind" [PENPOT]

NB: for privacy reasons, few details are provided in public revision histories.
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2014-04-02T02:03:28updateSystem / admin update -
2014-01-20T05:33:00updateSystem / admin update -
2013-10-29T19:33:24updateSystem / admin update -