[1]
Broline, D.M. and Selig, R.A. 1996. Emigration and the “Safety-Valve” Theory in the Eighteenth Century: Some Mathematical Evidence from the Prince-Bishopric of Würzburg. Yearbook of German-American Studies. 31, (Dec. 1996), 137–156. DOI:https://doi.org/10.17161/ygas.v31i.19175.