Columbia subject headings:
Italy, Central--Antiquities--Congresses.
Italy, Central--Religion--Congresses.
Italy, Central--Religious life and customs--Congresses.
Umbrians (Italic people)--Religion--Congresses.
Harvard subject headings:
Italy, Central--Antiquities--Congresses.
Italy, Central--Religion--Congresses.
Italy, Central--Religious life and customs--Congresses.
Umbrians (Italic people)--Religion--Congresses.
Princeton subject headings:
Italy, Central--Antiquities--Congresses.
Italy, Central--Religion--Congresses.
Italy, Central--Religious life and customs--Congresses.
Umbrians (Italic people)--Religion--Congresses.