Columbia subject headings:
Ansúrez, Pedro, conde de Carrión y Saldaña, approximately 1037 - approxima--Exhibitions.
Castile (Spain)--History--Alfonso VI, 1065-1109--Exhibitions.
Valladolid (Spain)--History--Exhibitions.
Harvard subject headings:
Ansúrez, Pedro conde de Carrión y Saldaña approximately 1037 - approxima--Exhibitions.
Castile (Spain)--History--Alfonso VI, 1065-1109--Exhibitions.
Valladolid (Spain)--History--Exhibitions.
Princeton subject headings: