CABAJ, J. Scientific Belts as a Factor of National Integration on Poland’s Leaders at the time of the 19th and 20th centuries. Historia i Świat, [S. l.], v. 7, p. 209–219, 2018. DOI: 10.34739/his.2018.07.15. Disponível em: https://czasopisma.uph.edu.pl/historiaswiat/article/view/122. Acesso em: 4 maj. 2024.