Låg, Jul (ed.): Geomedical problems related to aluminium, iron and manganeseThe geomedical activities of the Norwegian Academy of Science and Letters have continued. In cooperation with the Working Group "Soils and Geomedicine" of International Society of Soil Science a new international symposium was arranged in Oslo 18. 19. 11. 1993, now on the influences of the three elements aluminium, iron and manganese. Earlier the Academy has published proceedings from the following eight symposia :"Geomedical aspects in present and