Columbia subject headings:
Islam--Dictionaries.
Islam--Encyclopedias.
Islamic civilization--Encyclopedias.
Islamic countries--Encyclopedias.
Harvard subject headings:
Islam--Encyclopedias
Islamic civilization--Encyclopedias.
Islamic countries--Encyclopedias.
Reference works.
Princeton subject headings:
Dictionaries.
Encyclopedias.
Islam--Dictionaries.
Islam--Encyclopedias.
Islamic civilization--Encyclopedias.
Islamic countries--Dictionaries & encyclopedias.