DIETEREN, Remigius; PHILIPS, J.F.R. (Rudolf). Woord vooraf. Studies over de sociaaleconomische geschiedenis van Limburg, [S. l.], v. 20, p. VII-VIII, 1975. DOI: 10.58484/ssegl.v20i12827. Disponível em: https://testplatform.openjournals.nl/SSEGL/article/view/12827. Acesso em: 12 apr. 2026.