Columbia subject headings:
Harvard subject headings:
College teachers--Poland--Wrocław--History--19th century--Congresses.
Historians--Poland--Wrocław--History--19th century--Congresses.
Uniwersytet Wrocławski--History--19th century--Congresses.
Wrocław (Poland)--History--19th century--Congresses.
Princeton subject headings:
College teachers--Poland--Wrocław--History--19th century.
Historians--Poland--Wrocław--History--19th century.
Uniwersytet Wrocławski--History--19th century.
Wrocław (Poland)--History--19th century.