KRAUS, J. A. Freiwillig leibeigen geworden?. Zollerheimat, [S. l.], v. 6, n. 3, p. 23–24, 1937. DOI: 10.53458/zh.v6i3.10641. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/zh/article/view/10641. Acesso em: 3 juli. 2024.