Columbia subject headings:
Adda River (Italy)--Navigation--History--16th century--Sources.
Canals--Italy--Paderno d'Adda--History--16th century--Sources.
Milan (Italy)--History--16th century--Sources.
Paderno Canal (Italy)--History--16th century--Sources.
River surveys--Italy--History--16th century--Sources.
Harvard subject headings:
Adda River (Italy)--Navigation--History--16th century--Sources.
Canals--Italy--Milan--History--Early works to 1800.
Canals--Italy--Paderno d'Adda--History--16th century--Sources.
Milan (Italy)--History--16th century--Sources.
Paderno Canal (Italy)--History--16th century--Sources.
Paderno Canal (Italy)--History--Early works to 1800.
River surveys--Italy--History--16th century--Sources.
Princeton subject headings:
Canals--Italy--Milan--Early works to 1800.
Hydraulic engineering--Italy--History--Early works to 1800.
Inland navigation--Italy--Adda River.