Physics Stack Exchange
Physics Stack Exchange

Hammar
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  • Member since January 29 2016
  • 101 profile views
  • Last seen Feb 11 '19 at 13:29

Thinker,Thinker,Thinker,Thinker,Thinker,Thinker,Thinker,Thinker,Thinker,Thinker,Thinker,Thinker,