WALIŚ, J. Kryzys węglowy lat 1898‒1902 w Królestwie Polskim. UR Journal of Humanities and Social Sciences, [S. l.], v. 34, n. 1, p. 63–77, 2025. DOI: 10.15584/johass.2025.1.4. Disponível em: https://journals.ur.edu.pl/jhss/article/view/11102. Acesso em: 5 grudz. 2025.