Columbia subject headings:
Emigration and immigration--Religious aspects--Congresses.
Europe--Emigration and immigration--Congresses.
Germany--Emigration and immigration--Congresses.
Muslims--Europe--Congresses.
Muslims--Germany--Congresses.
Muslims--Migrations--Europe--Congresses.
Muslims--Migrations--Germany--Congresses.
Harvard subject headings:
Emigration and immigration--Religious aspects--Congresses.
Europe--Emigration and immigration--Congresses.
Germany--Emigration and immigration--Congresses.
Muslims--Europe--Congresses.
Muslims--Europe--Migrations--Congresses.
Muslims--Germany--Congresses.
Muslims--Germany--Migrations--Congresses.
Princeton subject headings: