Knowen - History & comments

Now you are in the subtree of Physics public knowledge tree.

Date	User name	Title of change
27 January 2014, 21:56 (UTC+00:00)	Ivar Martin	cleaned up the wiki text
27 January 2014, 19:46 (UTC+00:00)	Ivar Martin	added material from wikipedia
9 January 2014, 22:56 (UTC+00:00)	Ivar Martin	small change
8 January 2014, 05:26 (UTC+00:00)	Ivar Martin	created node

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