BROLINE, Duane M.; SELIG, Robert A. Emigration and the “Safety-Valve” Theory in the Eighteenth Century: Some Mathematical Evidence from the Prince-Bishopric of Würzburg. Yearbook of German-American Studies, [S. l.], v. 31, p. 137–156, 1996. DOI: 10.17161/ygas.v31i.19175. Disponível em: https://journals.ku.edu/ygas/article/view/19175.. Acesso em: 22 jul. 2024.