Columbia subject headings:
Hydraulic engineering--Italy--History--Congresses.
Hydraulics--Italy--History--Congresses.
Hydrology--Italy--History--Congresses.
Harvard subject headings:
Hydraulic engineering--Italy--History--Congresses.
Hydraulics--History--Congresses.
Hydrology--Italy--History--Congresses.
Princeton subject headings:
Drainage--Italy--History--16th century--Congresses.
Hydraulic engineering--Italy--History--16th century--Congresses.
Hydraulic machinery--Italy--History--16th century--Congresses.