Andresen, Jens-Bjørn R., and Søren M. Kristiansen. Historic Maps As Source for Hydrological Reconstruction of Pre-Industrial Landscape Wetness in Denmark: A Methodological Study. Rapporter. Aarhus, DK: Aarhus Universitet, 2023. Accessed October 2, 2025. https://openbooks.kb.dk/au/catalog/book/491.