Epidemic Threats in Prussia and Upper Silesia between 1871 and 1918 and methods of combating by Prussian authorities. Zaranie Śląskie, [S. l.], n. 6, p. 35–44, 2021. Disponível em: https://zaranieslaskie.bs.katowice.pl/article/view/72. Acesso em: 7 oct. 2025.