Levels of environmental pollutants in male and female flounder (Platichthys flesus L.) and cod (Gadus morhua L.) caught during the year 1988 near or in the waterway of Glomma, the largest river of Norway. I. Polychlorinated biphenyls - Marthinsen, I.; Staveland, G.; Skaare, J. U.; Ugland, K. I.; Haugen, A. (Archives of Environmental Contamination and Toxicology, 1991)