Columbia subject headings:
Harvard subject headings:
Agostino di Duccio, 1418-approximately 1481--Criticism and interpretation.
Facades--Italy--Perugia.
Oratorio di San Bernardino (Perugia, Italy)
Perugia (Italy)--Buildings, structures, etc.
Sculpture, Renaissance--Italy--Perugia.
Princeton subject headings:
Agostino di Duccio, 1418-1481?
Church architecture--Italy--Perugia.
Facades--Italy--Perugia.
San Bernardino (Church : Perugia, Italy)