Columbia subject headings:
Art, Spanish--Catalogs.
Art--Spain--Madrid--Catalogs.
Museo del Prado--Catalogs.
Harvard subject headings:
Art, Spanish--Catalogs.
Art--Spain--Madrid--Catalogs
Museo del Prado--Catalogs.
Princeton subject headings:
Art, Spanish--Catalogs.
Art--Spain--Madrid--Catalogs.
Catalogs.
Museo del Prado--Catalogs.