Columbia subject headings:
Harvard subject headings:
González, Fernán, conde de Castilla, -970--In literature.
Poema de Fernán González--Concordances.
Princeton subject headings:
Facsimiles.
González, Fernán, conde de Castilla, -970--Poetry.
Manuscripts, Spanish--Facsimiles.
Paleography, Spanish.
Poema de Fernán González--Manuscripts--Facsimiles.