Columbia subject headings:
Physicians--Italy--Norcia--Biography.
Physicians--Italy--Preci--Biography.
Surgeons--Italy--Norcia--Biography.
Surgeons--Italy--Preci--Biography.
Surgery--Italy--History.
Harvard subject headings:
Physicians--Italy--Norcia--Biography.
Physicians--Italy--Preci--Biography.
Surgeons--Italy--Norcia--Biography.
Surgeons--Italy--Preci--Biography.
Surgery--Italy--History.
Princeton subject headings:
Physicians--Italy--Norcia--Biography.
Physicians--Italy--Preci--Biography.
Surgeons--Italy--Norcia--Biography.
Surgeons--Italy--Preci--Biography.
Surgery--History--Italy.