Revision history for entry Perrett, Roy W. (1999). "Preferring more pain to less" [PERPMP]

NB: for privacy reasons, few details are provided in public revision histories.
TimeTypeNotes
2014-03-22T10:52:28updateSystem / admin update -
2013-11-04T06:50:14updateSystem / admin update -
2010-10-01T20:45:10updateSystem / admin update -