Columbia subject headings:
Arabs--Genealogy--Early works to 1800.
Arabs--History--Early works to 1800.
Yemenis--Genealogy--Early works to 1800.
Yemenis--History--Early works to 1800.
Harvard subject headings:
Arabs--Genealogy--Early works to 1800
Arabs--History--Early works to 1800.
Yemenis--Genealogy--Early works to 1800.
Yemenis--History--Early works to 1800.
Princeton subject headings:
Arabs--Genealogy--Early works to 1800.
Arabs--History--Early works to 1800.
Yemenis--Genealogy--Early works to 1800.
Yemenis--History--Early works to 1800.