Columbia subject headings:
Pisa (Italy)--Antiquities.
Pisa (Italy)--Buildings, structures, etc.
Pisa (Italy)--History.
Harvard subject headings:
Excavations (Archaeology)--Italy--Pisa.
Pisa (Italy)--Antiquities.
Pisa (Italy)--Buildings, structures, etc.
Pisa (Italy)--History.
Princeton subject headings:
Archaeology, Medieval--Italy--Pisa.
Excavations (Archaeology)--Italy--Pisa.
Pisa (Italy)--Antiquities.