Columbia subject headings:
Amico dei musicisti.
Music publishing--Italy--Perugia--History--20th century.
Music--Italy--Perugia--20th century--History and criticism--Sources.
Università per stranieri--History--Sources.
Harvard subject headings:
Amico dei musicisti.
Music publishing--Italy--Perugia--History--20th century.
Music--Italy--Perugia--20th century--History and criticism--Sources.
Università per stranieri--History--Sources.
Princeton subject headings:
Amico dei musicisti.
Music publishing--Italy--Perugia--History--20th century.
Music--Italy--Perugia--20th century--History and criticism--Sources.
Università per stranieri--History--Sources.