Columbia subject headings:
Harvard subject headings:
Cities and towns--Europe, Eastern--History--19th century--Congresses.
Cities and towns--Europe, Eastern--History--20th century--Congresses.
City and town life--Europe, Eastern--History--19th century--Congresses.
City and town life--Europe, Eastern--History--20th century--Congresses.
City and town life--Poland--History.
City and town life--Ukraine--Lʹviv--History.
Europe, Eastern--Ethnic relations--19th century--Congresses.
Europe, Eastern--Ethnic relations--20th century--Congresses.
German--Poland.
Lʹviv (Ukraine)--Ethnic relations.
Princeton subject headings:
Cities and towns--Europe, Eastern--History--19th century--Congresses.
Cities and towns--Europe, Eastern--History--20th century--Congresses.
City and town life--Europe, Eastern--History--19th century--Congresses.
City and town life--Europe, Eastern--History--20th century--Congresses.
Europe, Eastern--Ethnic relations--19th century--Congresses.
Europe, Eastern--Ethnic relations--20th century--Congresses.