Columbia subject headings:
Harvard subject headings:
Hasselbach, Carl Gustav Friedrich, 1809-1882--Congresses.
Magdeburg (Germany)--Biography--Congresses.
Magdeburg (Germany)--History--19th century--Congresses.
Politicians--Germany--Magdeburg--Biography--Congresses.
Princeton subject headings:
Hasselbach, Carl Gustav Friedrich, 1809-1882--Congresses.
Magdeburg (Germany)--Biography--Congresses.
Magdeburg (Germany)--History--19th century--Congresses.
Politicians--Germany--Magdeburg--19th century--Biography--Congresses.