Revision history for entry Falk, Arthur E. (1981). "Purpose, feedback, and evolution" [FALPFA]

NB: for privacy reasons, few details are provided in public revision histories.
TimeTypeNotes
2016-02-04T06:06:20updateSystem / admin update -
2015-02-07T19:30:01updateSystem / admin update -
2014-11-17T20:35:52update
2010-09-23T11:38:48updateSystem / admin update -