Columbia subject headings:
Yaḥyá, King of Yemen, 1869?-1948.
Yemen (Republic)--History.
Yemen (Republic)--Politics and government.
Harvard subject headings:
Yaḥyá, King of Yemen, 1869?-1948.
Yemen (Republic)--History.
Princeton subject headings:
Yaḥyá ibn Muḥammad Ḥamīd al-Dīn, Imām of Yemen, 1869-1948.
Yemen (Republic)--History.
Yemen (Republic)--Politics and government.