Columbia subject headings:
Harvard subject headings:
Perugia (Italy)--Historical geography.
Perugia (Italy)--History.
Perugia Region (Italy)--Historical geography.
Perugia Region (Italy)--History.
Princeton subject headings:
Perugia (Italy)--Historical geography.
Perugia (Italy)--History.
Perugia Region (Italy)--Historical geography.
Perugia Region (Italy)--History.