PPS General Assembly

PPS General Assembly

Protocol from the meeting of the PPS Board 12.05.1957

Letter from Tadeusz Kotarbiński written 04.03.1961

Letter from Tadeusz Kotarbiński written 21.03.1968

Letter to Tadeusz Kotarbiński written 23.02.1961

Letter from Tadeusz Kotarbiński written 02.12.1967