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Walls -- Catalonia -- Girona  [1]
Water -- Fluoridation  [1]
Water -- Law and legislation  [1]
Water -- Pollution  [11]
Water -- Pollution -- Catalonia  [1]
Water -- Pollution -- Catalonia -- Osona  [1]
Water -- Prices  [1]
Water -- Purification  [1]
Water chemistry  [7]
Water quality  [3]
Water quality -- Catalonia -- Onyar (River)  [1]
Water quality biological assessment  [3]
Water resources development  [5]
Water resources development -- Catalonia  [2]
Water reuse  [1]
Water-supply  [1]
Watersheds -- Catalonia  [1]
Wet meadows -- Catalonia  [2]
Wetland ecology  [1]
Wetlands  [4]
Wetlands -- Catalonia -- Caldes de Malavella  [1]
Wetlands -- Catalonia -- Empordà  [1]
Wetlands -- Catalonia -- Pals  [2]
Wildlife -- Effect of fires on -- Catalonia -- Creus, Cap de  [1]