P
Producció lletera -- Catalunya -- Girona -- Congressos  [1]
Productes agrícoles -- Congressos  [1]
Protected areas -- Congresses  [18]
R
Reactors de membrana  [1]
Recursos marins -- Congressos  [3]
Recursos marins -- Explotació -- Congressos  [1]
Regional planning -- Congresses  [1]
Rural development -- Catalonia -- Alta Garrotxa -- Congresses  [1]
Rural development -- Congresses  [6]
S
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]
Stream conservation -- Congresses  [1]
Stream conservation -- Congresses  [2]
Sustainable development -- Study and teaching -- Congresses  [1]
Sustainable development -- Atudy and teaching -- Congresses  [1]
Sustainable development -- Catalonia -- Congresses  [1]
Sustainable development -- Catalonia -- Girona -- Congresses  [1]
Sustainable development -- Congresses  [15]
Sustainable development -- Study and teaching -- Congresses  [3]