Columbia subject headings:
Alfonso VI, King of Castile and Leon, 1030-1109--Congresses.
Castile (Spain)--History--Alfonso VI, 1065-1109--Congresses.
Toledo (Spain)--Church history--Congresses.
Toledo (Spain)--History--Congresses.
Harvard subject headings:
Alfonso VI, King of Castile and Leon, 1030-1109--Congresses.
Spain--History--711-1516--Congresses.
Toledo (Spain : Province)--History--Congresses.
Princeton subject headings:
Alfonso VI, King of Castile and Leon, 1030-1109--Congresses.
Castile (Spain)--History--Alfonso VI, 1065-1109--Congresses.
Toledo (Spain)--Church history--Congresses.
Toledo (Spain)--History--Congresses.