DIETEREN, Remigius; PHILIPS, J.F.R. (Rudolf). Woord vooraf. Studies over de sociaaleconomische geschiedenis van Limburg, [S. l.], v. 18, p. VII-VIII, 1973. DOI: 10.58484/ssegl.v18i12846. Disponível em: https://testplatform.openjournals.nl/SSEGL/article/view/12846. Acesso em: 11 apr. 2026.