Columbia subject headings:
Architecture--Italy--Pisa.
Italy--History--476-1492.
Pisa (Italy)--Buildings, structures, etc.--Pictorial works.
Pisa (Italy)--History.
Urbanization--Italy--Pisa.
Harvard subject headings:
Architecture, Medieval--Italy--Pisa.
Italy--History--476-1492.
Pisa (Italy)--Buildings, structures, etc.--Pictorial works.
Pisa (Italy)--History.
Urbanization--Italy--Pisa.
Princeton subject headings:
Architecture--Italy--Pisa.
Pisa (Italy)--Antiquities.
Pisa (Italy)--Buildings, structures, etc.