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Recursos marins -- Congressos  [3]
Recursos marins -- Explotació -- Congressos  [1]
Regional planning -- Congresses  [1]
Rural development -- Catalonia -- Alta Garrotxa -- Congresses  [1]
Rural development -- Congresses  [6]
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Saline water conversion -- Congresses  [2]
Seashore -- Catalonia -- La Pletera -- Congresses  [5]
Sewage -- Purification  [2]
Sewage disposal plants  [1]
Shipping -- Environmental aspects -- Congresses  [2]
Sistema cardiovascular -- Malalties -- Congressos  [1]
Social integration -- Congresses  [1]