HSTROY-NORMAL DISTRIBU a Johann carl friedrich gauss Germany a One of the greatest mathematician a Applied in physics, astronomy a Gaussian distribution (177~1855) AU656184200 177 DDR 6561842D0 20 Mark and Stamp in memory of Gauss.5 histroy-Normal Distribution  Johann Carl Friedrich Gauss  Germany  One of the greatest mathematician  Applied in physics, astronomy  Gaussian distribution (1777~1855) Mark and Stamp in memory of Gauss