Columbia subject headings:
Documentary photography--Poland--History--20th century--Congresses.
Photojournalism--Poland--History--20th century--Congresses.
Harvard subject headings:
Documentary photography--Poland--History--20th century.
Photojournalism--Poland--History--20th century.
Poland--History--Pictorial works.
Princeton subject headings:
Documentary photography--Poland--History--20th century--Congresses.
Photojournalism--Poland--History--20th century--Congresses.