[1]
von Seht, H. 2010. Regional Planning for the Extraction of Non-energy Raw Materials: an analysis of requirements, Problems and options on the Basis of experiences in north rhine-Westphalia. Raumforschung und Raumordnung | Spatial Research and Planning. 68, 5 (Oct. 2010), 419–431. DOI:https://doi.org/10.1007/s13147-010-0056-0.