Columbia subject headings:
Islam--Study and teaching--Turkey--Düzce İli.
Islamic education--Turkey--Düzce İli.
Islamic religious education--Turkey--Düzce İli.
Religious institutions--Turkey--Düzce İli.
Harvard subject headings:
Düzce (Düzce İli, Turkey)--History--20th century.
Islam--Study and teaching--Turkey--Düzce İli.
Islamic education--Turkey--Düzce İli.
Islamic religious education--Turkey--Düzce İli.
Religious institutions--Turkey--Düzce İli.
Princeton subject headings:
Islam--Study and teaching--Turkey--Düzce İli.
Islamic education--Turkey--Düzce İli.
Islamic religious education--Turkey--Düzce İli.
Religious institutions--Turkey--Düzce İli.