Columbia subject headings:
Social problems--Turkey--Congresses.
Social service--Turkey--Congresses.
Turkey--Social conditions--Congresses.
Harvard subject headings:
Social problems--Turkey--Congresses.
Social service--Turkey--Congresses.
Turkey--Social conditions--Congresses.
Princeton subject headings:
Social problems--Turkey--Congresses.
Social service--Turkey--Congresses.
Turkey--Social conditions--Congresses.