Columbia subject headings:
Harvard subject headings:
Political parties--Germany--Upper Lusatia--History.
Sorbs--Germany--Politics and government.
Upper Lusatia (Germany)--Politics and government--20th century.
Princeton subject headings:
Political parties--Germany--Upper Lusatia--History.
Sorbs--Germany--Politics and government.
Upper Lusatia (Germany)--Politics and government--20th century.