Columbia subject headings:
Harvard subject headings:
Gdańsk (Poland)--History--20th century.
Gdańsk (Poland)--Social conditions--20th century.
Gdańsk (Poland)--Social life and customs--20th century.
Princeton subject headings:
Gdańsk (Poland)--Economic conditions--20th century.
Gdańsk (Poland)--History--20th century.
Gdańsk (Poland)--Social conditions--20th century.