BRZEZIŃSKI, A. M. Oskar Halecki – the advocate of Central and Eastern European countries in the International Committee on Intellectual Cooperation of the League of Nations (1922‑1925). Studia z Dziejów Rosji i Europy Środkowo-Wschodniej, [S. l.], v. 48, 2013. DOI: 10.12775/SDR.2013.21. Disponível em: https://apcz.umk.pl/SDR/article/view/SDR.2013.21. Acesso em: 26 kwi. 2024.