Columbia subject headings:
Fortification--Italy--Perugia.
Military architecture--Italy--Perugia--Conservation and restoration.
Perugia (Italy)--Buildings, structures, etc.
Sangallo, Antonio da, 1484-1546.
Harvard subject headings:
Architecture--Conservation and restoration--Italy--Perugia.
Fortification--Italy--Perugia.
Military architecture--Conservation and restoration--Italy--Perugia.
Paolina Fort (Perugia, Italy)
Perugia (Italy)--Buildings, structures, etc.
Sangallo, Antonio da, 1484-1546
Princeton subject headings:
Fortification--Italy--Perugia.
Military architecture--Italy--Perugia--Conservation and restoration.
Perugia (Italy)--Buildings, structures, etc.
Sangallo, Antonio da, 1484-1546.