Columbia subject headings:
Lusatia (Germany)--History--Sources.
Lusatia (Germany)--Social conditions--Sources.
Harvard subject headings:
Princeton subject headings:
Lusatia (Germany)--History--19th century--Sources.
Lusatia (Germany)--Social conditions--Sources.
Prussia (Germany)--History--1815-1870--Sources.
Social classes--Germany (East)--Lusatia--History--19th century--Sources.