DIETEREN, Remigius; PHILIPS, J.F.R. (Rudolf). Woord vooraf. Studies over de sociaaleconomische geschiedenis van Limburg, [S. l.], v. 19, p. VII-VIII, 1974. DOI: 10.58484/ssegl.v19i12838. Disponível em: https://testplatform.openjournals.nl/SSEGL/article/view/12838. Acesso em: 11 apr. 2026.