OverDhill Posted January 28, 2014 Posted January 28, 2014 Not seen this before so I thought I would share. Looks interesting http://www.pumaszallas.hu/elmeleti-anyagok/repuleselmelet/navigacio/259-dr-tarcsa-flash-verzio.html http://www.pumaszallas.hu/elmeleti-anyagok/repuleselmelet/navigacio/272-nl-7-lec-flash-verzio.html https://sites.google.com/site/sliderulesite/dreieckrechner Quote
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