Fechner, Gustav Theodor
born 19. April 1801 in Żarki Wielkie; died 18. November 1887 in LeipzigBrief von Gustav Theodor Fechner an Hans Vaihinger, 10.05.1881
Leipzig ; o.O., 10.05.1881Brief von Gustav Theodor Fechner an Hans Vaihinger, o.D.
ohne Ort, o.D.Mach, Ernst
born 18. February 1838 in Brünn; died 19. February 1916 in VaterstettenBrief von Ernst Mach an Hans Vaihinger, 14.08.1884 [06.09.1884; 14.08.1884]
Prag, 14.08.1884 [06.09.1884; 14.08.1884]Brief von Ernst Mach an Hans Vaihinger, 06.09.1884
Prag, 06.09.1884Planck, Max
born 23. April 1858 in Kiel; died 4. October 1947 in GöttingenBrief von Max Planck an Adolf Erman
Grunewald, 16.07.1915Brief von Max Planck an Adolf Erman
Grunewald, 20.07.1915Brief von Max Planck an Adolf Erman
Grunewald, 30.04.1933Ramsauer, Carl
born 6. February 1879 in Oldenburg-Osternburg; died 24. December 1955 in Berlin