[Restoration of lake Jaernsjoen. Physiological and morphological investigations in perch and rainbow trout]

bifenilos policlorados contaminantes industriales enfermedades de los peces environmental impact assessment fish diseases industria de la pasta y el papel industrial pollutants lac lagos lakes lutte antipollution maladie des poissons perca polluant industriel pollution control pollution de l'eau polychlorinated biphenyls pulp and paper industry salmo gairdneri sediment pollution suecia sweden water pollution