Siekierska A. Memoirs of Jan Schwarz (Szwarc) – pedagogue, psychologist, organizer of the State Higher School of Pedagogy in Gdańsk – as a source for professional biography. Progress [Internet]. 2021 Dec. 22 [cited 2024 May 18];(9-10):273-8. Available from: https://czasopisma.bg.ug.edu.pl/index.php/Progress/article/view/6508