Columbia subject headings:
Cologne (Germany)--Pictorial works.
Photobooks--Germany.
Photography literature--Germany.
Photography--Germany--Bibliography.
Photography--Germany--History.
Publishers and publishing--Germany--Catalogs.
Harvard subject headings:
Princeton subject headings:
Catalogs.
Cologne (Germany)--Pictorial works.
Photobooks--Germany--Cologne--Catalogs.
Photography literature--Germany--Cologne--Catalogs.
Photography--Germany--Cologne--Bibliography.
Publishers and publishing--Germany--Catalogs.