Columbia subject headings:
Aragon (Spain)--History.
Aragon (Spain)--Population.
Christians--Spain--Aragon--History.
Muslims--Spain--Aragon--History.
Harvard subject headings:
Aragon (Spain)--History.
Aragon (Spain)--Population.
Boundaries--History.
Christians--Spain--Aragon--History.
Muslims--Spain--Aragon--History.
Spain--History--711-1516.
Princeton subject headings:
Aragon (Spain)--History--Sancho Ramírez, 1063-1094.
Aragon (Spain)--Population.
Christians--Spain--Aragon--History.
Muslims--Spain--Aragon--History.