Chemical data of plant, animal and human tissues as a basis of geomedical investigations - Låg, Jul, 1915-2000 (Oslo : The Norwegian Academy of Science and Lettres, 1996)
International sypmposium arranged in Oslo 30. November - 1. December 1995 by the working group Soils and Geomedicine of the International Society of Soil Science and the Norwegian Academy of Science and Letters