Columbia subject headings:
Harvard subject headings:
Museo del Prado--Exhibitions.
Portrait painting, Spanish--16th century--Exhibitions.
Portrait painting, Spanish--17th century--Exhibitions.
Portrait painting, Spanish--18th century--Exhibitions.
Princeton subject headings:
Museo del Prado--Exhibitions.
Portrait painting, Spanish--16th century--Exhibitions.
Portrait painting, Spanish--17th century--Exhibitions.
Portrait painting, Spanish--18th century--Exhibitions.