Columbia subject headings:
Harvard subject headings:
Germans--Hungary--History--18th century--Sources.
Germans--Hungary--History--19th century--Sources.
Germany--Emigration and immigration--History--18th century--Sources.
Germany--Emigration and immigration--History--19th century--Sources.
Hungary--Emigration and immigration--History--18th century--Sources.
Hungary--Emigration and immigration--History--19th century--Sources.
Immigrants--Hungary--History--18th century--Sources.
Immigrants--Hungary--History--19th century--Sources.
Princeton subject headings:
Germans--Hungary--History--18th century.
Germans--Hungary--History--19th century.