Columbia subject headings:
Harvard subject headings:
Agricultural laborers--Germany--Magdeburg Region--History--19th century.
Agricultural laborers--Germany--Magdeburg Region--History--20th century.
Agricultural laborers--Germany--Prussia--History--19th century.
Agricultural laborers--Germany--Prussia--History--20th century.
Princeton subject headings:
Agricultural laborers--Germany--Magdeburg Region--History--19th century.
Agricultural laborers--Germany--Magdeburg Region--History--20th century.
Agricultural laborers--Germany--Prussia--History--19th century.
Agricultural laborers--Germany--Prussia--History--20th century.