Discusses the so-called Peel-Raamstelling, a line of defense works running through the provinces of Noord-Brabant and Limburg, and argues in favor of its conservation.
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d'une licence CC BY 4.0 / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 license