Columbia subject headings:
Poverty--Netherlands--Zwolle--History--17th century.
Public welfare--Netherlands--Zwolle--History--17th century.
Working poor--Netherlands--Zwolle--History--17th century.
Harvard subject headings:
Public welfare--Netherlands--Zwolle--History--17th century.
Public welfare--Netherlands--Zwolle--History--18th century.
Zwolle (Netherlands)--Social conditions.
Princeton subject headings: