Columbia subject headings:
Harvard subject headings:
Charities--Europe--History--Congresses.
Europe--Rural conditions.
Poor--Services for--Europe--History--Congresses.
Rural poor--Services for--Europe--History--Congresses.
Social service, Rural--Europe--History--Congresses.
Princeton subject headings:
Europe--Rural conditions.
Rural missions--Europe--History.
Rural poor--Europe--History.
Social service, Rural--Europe--History.