Browse history From year (and earlier): From month (and earlier): all January February March April May June July August September October November December Deleted only For any version listed below, click on its date to view it. For more help, see Help:Page history. (cur) = difference from current version, (prev) = difference from preceding version, m = minor edit, → = section edit, ← = automatic edit summary (cur | prev) 07:56, July 1, 2009 Dr Joe Kiff (Talk | contribs) . . (235 bytes) (+35) . . (undo) (cur | prev) 23:04, August 31, 2006 Jaywin (Talk | contribs) . . (200 bytes) (+200) . . Retrieved from "https://psychology.wikia.org/wiki/Knowledge-Based_Systems" Community content is available under CC-BY-SA unless otherwise noted.