Columbia subject headings:
Gates--Italy--Perugia.
Perugia (Italy)--Buildings, structures, etc.
Perugia (Italy)--Description and travel.
Religion in art.
Symbolism in architecture.
Harvard subject headings:
Gates--Italy--Perugia.
Perugia (Italy)--Buildings, structures, etc.
Perugia (Italy)--Description and travel.
Religion in art.
Symbolism in architecture.
Princeton subject headings:
Gates--Italy--Perugia.
Perugia (Italy)--Buildings, structures, etc.
Perugia (Italy)--Description and travel.
Religion in art.
Symbolism in architecture.