Columbia subject headings:
Harvard subject headings:
Cottages--Germany--Schwarme--History.
Farmers--Germany--Schwarme--History.
Farmers--Germany--Schwarme--Social conditions.
Farms, Small--Germany--Schwarme--History.
Princeton subject headings:
Cottages--Germany--Schwarme--History.
Farmers--Germany--Schwarme--History.
Farmers--Germany--Schwarme--Social conditions.
Farms, Small--Germany--Schwarme--History.