Columbia subject headings:
Harvard subject headings:
Convento da Arrábida--Congresses.
Hydraulic engineering--Europe--History--Congresses.
Hydraulic machinery--Europe--History--Congresses.
Hydraulic structures--Europe--History--Congresses.
Hydraulics--History--Congresses.
Monasteries--Europe--History--Congresses.
Princeton subject headings:
Convento da Arrábida--Congresses.
Hydraulic engineering--Europe--History--Congresses.
Hydraulic machinery--Europe--History--Congresses.
Hydraulic structures--Europe--History--Congresses.
Hydraulics--History--Congresses.
Monasteries--Europe--History--Congresses.