Nutrients in and discharges from streams in Aarhus County 1992

aguas residuales aquatic environment azote calidad del agua climatic factors conservation de la nature cours d'eau cursos de agua danemark denmark dinamarca environmental protection facteur climatique fosforo lutte antipollution milieu aquatique monitoring nature conservation nitrogen nutrientes nutrients phosphore phosphorus pollution control protection de l'environnement rivers soil types substance nutritive type de sol vigilancia wastewater water quality