Columbia subject headings:
Cities and towns--Saudi Arabia--History--Encyclopedias.
Mecca (Saudi Arabia)--History--Encyclopedias.
Muslim pilgrims and pilgrimages--Saudi Arabia--Mecca--Encyclopedias.
Harvard subject headings:
Cities and towns--Saudi Arabia--History--Dictionaries.
Mecca (Saudi Arabia)--History--Dictionaries.
Muslim pilgrims and pilgrimages--Saudi Arabia--Mecca--Dictionaries.
Princeton subject headings:
Cities and towns--Saudi Arabia--History--Encyclopedias.
Encyclopedias.
Mecca (Saudi Arabia)--History--Encyclopedias.
Muslim pilgrims and pilgrimages--Saudi Arabia--Mecca--Encyclopedias.