BALLE, W. 80-Jahr-Feier des Jahrgangs 1933/34. Backnanger Jahrbuch, [S. l.], v. 23, p. 279–280, 2015. DOI: 10.53458/bjb.v23i.9791. Disponível em: https://journals.wlb-stuttgart.de/ojs/index.php/bjb/article/view/9791. Acesso em: 23 juli. 2024.