Columbia subject headings:
India--Civilization--Arab influences.
India--Relations--Oman.
Oman--Relations--India.
Harvard subject headings:
India--Civilization--Arab influences.
India--Relations--Oman--History.
Ismailites
Oman--Relations--India--History.
Princeton subject headings:
India--Civilization--Arab influences.
India--Relations--Oman--History.
Ismailites.
Oman--Relations--India--History.