Columbia subject headings:
Architecture, Industrial--Spain--Pictorial works.
Factories--Remodeling for other use--Spain--Pictorial works.
Factories--Spain--Pictorial works.
Harvard subject headings:
Princeton subject headings:
Architecture, Industrial--Spain--Pictorial works.
Factories--Remodeling for other use--Spain--Pictorial works.
Factories--Spain--Pictorial works.