Columbia subject headings:
Gershom ben Judah, Meʼor ha-Golah, active 10th century-11th century.
Harvard subject headings:
Gershom ben Judah, Meʼor ha-Golah, active 10th century-11th century.
Princeton subject headings:
Gershom ben Judah, Meʼor ha-Golah, active 10th century-11th century.