Columbia subject headings:
Roisin, Lucien.
Zaragoza (Spain)--Buildings, structures, etc.--Pictorial works.
Zaragoza (Spain)--History--20th century--Pictorial works.
Harvard subject headings:
Roisin, Lucien.
Zaragoza (Spain)--Buildings, structures, etc.--Pictorial works.
Zaragoza (Spain)--History--20th century--Pictorial works.
Princeton subject headings: