Problem: Revision history

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Diff selection: Mark the radio buttons of the revisions to compare and hit enter or the button at the bottom.
Legend: (cur) = difference with latest revision, (prev) = difference with preceding revision, m = minor edit.

31 October 2013

  • curprev 15:2615:26, 31 October 2013Aaa77 talk contribs 173 bytes +173 Created page with "{{Learning concept |Description=Problem is an obstacle that makes achieving a desired goal or purpose difficult. |Wikipedia reference=http://en.wikipedia.org/wiki/Problem }}"