Columbia subject headings:
Ibadites--Asia, Central--History.
Ibadites--Early works to 1800.
Ibadites--India--History.
Ibadites--Iran--History.
Harvard subject headings:
Ibadites--Asia, Central--History.
Ibadites--Early works to 1800.
Ibadites--India--History.
Ibadites--Iran--History.
Ibadites--Oman--History.
Princeton subject headings:
Ibadites--Asia, Central--History.
Ibadites--Early works to 1800.
Ibadites--India--History.
Ibadites--Iran--History.
Ibadites--Oman--History.