Four perfect knowledges: Revision history

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Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

28 October 2017

1 October 2017

30 September 2017

26 December 2011

24 December 2011

16 March 2011

14 November 2010

13 November 2010

4 November 2010

14 May 2009

7 August 2007