[Enlargement of EU to the east: Environmental perspectives: Supplement]

agricultura agriculture aguas fecales aguas residuales air aire calidad del agua costos costs dioxyde de soufre eastern europe energia energie energy environmental impact europa oriental europe orientale european union impact sur l'environnement impacto ambiental inversiones investissement investment lutte antipollution nitrogen oxides oxyde d'azote ozone ozono pollution control reglamentaciones regulations sewage statistical data sulphur dioxide wastewater water quality