@article{Balstrøm_1990, title={Landslides: Extent and economic significance: proceedings of the 28. International Geological Congress: Symposium on Landslides, Washington, D.C., 17July 1989. Ed. by Earl E. Brabb & Betty L. Harrod.}, volume={90}, url={https://tidsskrift.dk/geografisktidsskrift/article/view/44836}, journal={Geografisk Tidsskrift}, author={Balstrøm, Thomas}, year={1990}, month={jan.} }