Columbia subject headings:
Berceo, Gonzalo de, active 13th century. Milagros de Nuestra Señora.
Harvard subject headings:
Berceo, Gonzalo de, active 13th century. Milagros de Nuestra Señora
Princeton subject headings:
Berceo, Gonzalo de, active 13th century. Milagros de Nuestra Señora.