Columbia subject headings:
González, Fernán, conde de Castilla, -970--Legends--History and criticism.
González, Fernán, conde de Castilla, -970.
Nobility--Spain--Castile--Biography.
Harvard subject headings:
González, Fernán, conde de Castilla, -970--Legends--History and criticism.
González, Fernán, conde de Castilla, -970.
Nobility--Spain--Castile--Biography.
Princeton subject headings:
Castile--Nobility--Biography.
González, Fernán, conde de Castilla, -970--Legends--History and criticism.
González, Fernán, conde de Castilla, -970.