Jan Gotlib -LRB- Bogumi -RRB- Bloch -LRB- July 24, 1836, Radom - December 25, 1902 \ / 1901, Warsaw -RRB-, was a Polish banker and railway financier who devoted his private life to the study of modern industrial warfare.
Ivan Bloch -LRB- July 24, 1836, Radom -- December 25, 1902 \ / 1901, Warsaw -RRB- -LRB-,,, -RRB- était un banquier de Pologne.