Composition (2) Worms (2) Wealth (2) Licenses (2) Impact (2) Biotic communities (2) Sources (2) Sources (2) Quality (2) Autorizaciones (2) Sources (2) Franc luxembourgeois (2) Autorisations (2) Vers (2) Impact (2) Richesse (2) Composition (2) Qualité (2) source (2) Economic conditions (1) Nutrition (1) Counting (1) Seedlings (1) Variation (1) Methods (1) Identification (1) City dwellers (1) Nineteen sixties (1) Restrooms (1) Suspended sediments (1)