Columbia subject headings:
Architectural photography.
Becher, Bernd, 1931-2007.
Becher, Hilla.
Photography, Artistic.
Photography, Industrial.
Harvard subject headings:
Becher, Bernd, 1931-2007--Exhibitions.
Becher, Hilla--Exhibitions.
Photography, Industrial--Exhibitions.
Princeton subject headings:
Architectural photography.
Becher, Bernd, 1931-2007.
Becher, Hilla.
Photography, Artistic.
Photography, Industrial.