1980. Geomedical aspects in present and future research.

• Preface. Side 7.
  
• Proceedings from previous geomedical symposia arranged by the Norwegian Academy of Science and Letters. Side 8.
  
• A.-K. Løes and G. L. Serikstad. Geomedical aspects in relation to the philosophical basis and farming practice within organic agriculture. Side 9.
  
• M. A. Oliver. Soil and human health: Geomedical aspects in relation to agriculture. Side 16.
  
• M. Magnusson. Influence of organic material on micronutrient uptake and nutritive value of plants. Side 33.
  
• R. P. Narwal, B. R. Singh and I. S. Hooda. Organic agriculture in India: Soil productivity and food and fodder quality. Side 50.
  
• T. Sivertsen. Connections between regional geochemistry and trace element problems in sheep in Norway. Side 65.
  
• I. Öborn. Do we risk nutrient imbalance in organic dairy production? Side 71.
  
• P. O. Aftret. Molybdenosis. Side 84.
  
• Ole Martin Eklo, Enrique Barriuso and Sabine Houot: Mobility and degradations of atrazine in soil columns. Side 84.
  
• A. Bernhoft, M. Torp, P.-E. Clasen, S. Uhlig and B. T. Heier. Less Fusarium infection and mycotoxins in organically than in conventionally:cultivated grain. Side 87.
  
• T. Strøm, E. Govasmark, A. Steen and S. Hansen. Mineral nutrient contents in plants and the nutrient supply for ruminants in organic agriculture. Side 95.
  
• S. Tveitnes and T. Sogn. Zinc, manganese and copper in the production of cereals in an organic farming system. Side 109.
  
• E. Steinnes. Atmospheric supply of chemical substance from the marine environment: Significance to organic farming? Side 119.
  
• A. F. Øgaard. Potassium in soil. Side 127.
  
• A. Bernhoft, H. Ween and A. Flåøyen. Insufficiency of vitamin E and selenium in suckling calves in Norwegian beef heards. Side 133.