Revision history for entry Frege, G. (1968). "On the purpose of the begriffsschrift" [FREOTP]

NB: for privacy reasons, few details are provided in public revision histories.
TimeTypeNotes
2012-08-27T23:55:54updateSystem / admin update -
2011-10-19T03:37:29updateSystem / admin update -
2010-09-09T16:41:26updateSystem / admin update -
2009-01-22T11:07:59updateSystem / admin update -