Gustav Theodor Fechner (1801–1887), German experimental psychologist. https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain
English Gustav Theodor Fechner (1801-1887) as a boy, after a chalk drawing by his older brother Eduard Clemens Fechner. German Gustav Theodor Fechner (1801-1887)
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse English Gustav Theodor Fechner (1801-1887) middle aged