Back جورج هارتمان (عالم فلك) Arabic جورج هارتمان (صانع ادوات من المانيا) ARZ Georg Hartmann (Mathematiker) German Georg Hartmann Esperanto Georg Hartmann French Georg Hartmann Italian Хартман, Георг Russian Georg Hartmann Swedish
Georg Hartmann (sometimes spelled Hartman; February 9, 1489 – April 9, 1564) was a German engineer, instrument maker, author, printer, humanist, priest, and astronomer.