Columbia subject headings:
Harvard subject headings:
German language--Dialectology.
German language--Dialects--Maps.
Language surveys--Germany--History--19th century.
Linguistic geography.
Wenker, Georg, 1852-1911. Sprachatlas des deutschen Reichs.
Princeton subject headings:
German language--Dialectology.
German language--Dialects--Maps.
Language surveys--Germany--History--19th century.
Linguistic geography.
Wenker, Georg, 1852-1911. Sprachatlas des deutschen Reichs.