Columbia subject headings:
Art, Spanish--Spain--Zaragoza (Province)
Church architecture--Spain--Zaragoza (Province)
Monasterio de Piedra (Zaragoza, Spain)--History.
Zaragoza (Spain : Province)--Church history.
Harvard subject headings:
Art, Spanish--Spain--Zaragoza (Province)
Church architecture--Spain--Zaragoza (Province)
Monasterio de Piedra (Zaragoza, Spain)--History.
Zaragoza (Spain : Province)--Church history.
Princeton subject headings:
Art, Spanish--Spain--Zaragoza (Province).
Church architecture--Spain--Zaragoza (Province).
Monasterio de Piedra (Zaragoza, Spain)--History.
Zaragoza (Spain : Province)--Church history.