Franc luxembourgeois (3) Employment (2) Denitrification (2) Worms (2) Spleen (2) Sodium (2) Pressure (2) Possibility (2) Pollution (2) Nitrates (2) Hand (2) Filters and filtration (2) Cations (2) Influence (2) Speed (2) Processing (2) Occupations (2) Filtros (2) Bazo (2) Posibilidad (2) Manos (2) Presión (2) Cationes (2) Contaminación (2) Trabajo (2) Travail (2) Structure tendue (2) Résistance des matériaux (2) Pollution (2) Perception sensible (2)