Columbia subject headings:
Harvard subject headings:
Bohemia (Czech Republic)--Emigration and immigration.
Border patrols--Czech Republic--Bohemia--History--19th century.
Border patrols--Germany--Saxony--History--19th century.
Migration, Internal--Czech Republic--Bohemia--History--19th century.
Migration, Internal--Germany--Saxony--History--19th century.
Saxony (Germany)--Emigration and immigration.
Social mobility--Czech Republic--Bohemia--History--19th century.
Social mobility--Germany--Saxony--History--19th century.
Princeton subject headings:
Bohemia (Germany)--History.
Saxony (Germany)--History.