physics

physics

Letter to Kazimierz Twardowski written 02.06.1917

Letter to Kazimierz Twardowski written 04.03.1917

Letter to Kazimierz Twardowski written 28.03.1922

Attachment to Irena Krońska’s letter written in 21.09.1968

Letter to Stefan Morawski written 08.01.1964

Curriculum vitae written nd.04.1921