Columbia subject headings:
Endowments--Islamic countries--History--Congresses.
Islam--Economic aspects--Congresses.
Waqf--Turkey--History--Congresses.
Harvard subject headings:
Endowments--Islamic countries--History--Congresses.
Islam--Economic aspects--Congresses
Waqf--Turkey--History--Congresses.
Princeton subject headings:
Endowments--Islamic countries--History--Congresses.
Islam--Economic aspects--Congresses.
Waqf--Turkey--History--Congresses.