Columbia subject headings:
Harvard subject headings:
Alfonso I, King of Aragon and Navarre, approximately 1073-1134.
Alfonso VI, King of Castile and Leon, 1030-1109
Aragon (Spain)--History--Alfonso I, 1104-1134.
Castile (Spain)--History--Alfonso VI, 1065-1109.
Castile (Spain)--History--Urraca, 1109-1126.
Church history--Middle Ages, 600-1500
Cluniacs--Spain--History.
Insurgency--Spain--History.
Spain--History--711-1516.
Spain--Politics and government--To 1479.
Spain--Social conditions--To 1800.
Urraca, Queen of Castile and Leon, 1081-1126
Princeton subject headings:
Spain--History--711-1516.
Spain--Politics and government--To 1479.
Spain--Social conditions--To 1800.