Columbia subject headings:
Jorwerd (Netherlands)--History--20th century.
Jorwerd (Netherlands)--Social life and customs--20th century.
Harvard subject headings:
Jorwerd (Netherlands)--History--20th century.
Jorwerd (Netherlands)--Social life and customs--20th century.
Princeton subject headings:
Jorwerd (Netherlands)--History--20th century.
Jorwerd (Netherlands)--Social life and customs--20th century.