Columbia subject headings:
Harvard subject headings:
Photographers--Europe, Eastern--Exhibitions.
Photographers--Germany (East)--Exhibitions.
Photography--Europe, Eastern--Exhibitions.
Photography--Germany (East)--Exhibitions.
Princeton subject headings:
Photography--Europe, Central--History--20th century--Exhibitions.
Photography--Europe, Eastern--History--20th century--Exhibitions.
Photography--Germany (East)--History--20th century--Exhibitions.