Columbia subject headings:
Harvard subject headings:
Church and state--Germany--Congresses.
Freedom of religion--Germany--Congresses.
Freedom of religion--Turkey--Congresses.
Laicism--Turkey--Congresses.
Religion and state--Turkey--Congresses.
Secularism--Turkey--History--Congresses.
Princeton subject headings:
Constitutional law--Germany.
Constitutional law--Turkey.
Public law--Germany.
Public law--Turkey.