Columbia subject headings:
Harvard subject headings:
Gdańsk Region (Poland)--Genealogy--Sources.
Gdańsk Region (Poland)--History--Sources.
Gdańsk Region (Poland)--Statistics--History--Sources.
Gdańsk Region (Poland)--Statistics.
Teutonic Knights
Princeton subject headings:
Gdańsk Region (Poland)--Genealogy--Sources.
Gdańsk Region (Poland)--History--Sources.
Gdańsk Region (Poland)--Statistics--History--Sources.
Gdańsk Region (Poland)--Statistics.
Teutonic Knights.