What is XXX's place of employment?
Stanisław Arnold
Stanisław Arnold (20 December 1895 in Dąbrowa Górnicza -- 3 November 1973 in Warszawa) was a Polish historian, professor of the University of Warsaw, member of the Polish Academy of Sciences, chief of Marksistowskie Zrzeszenie Historyków (Marxist Association of Historians).
University of Warsaw