HELLER, Michael. Preface. Theoria et Historia Scientiarum, [S. l.], v. 3, p. 5, 2007. DOI: 10.12775/ths.1993.001. Disponível em: https://apcz.umk.pl/THS/article/view/ths.1993.001. Acesso em: 8 jul. 2025.