Columbia subject headings:
Princes--Iran--Biography.
Ẓill al-Sulṭān, Masʻūd ibn Nāṣir al-Dīn, 1849-1918.
Harvard subject headings:
Princes--Iran--Biography.
Ẓill al-Sulṭān, Masʻūd ibn Nāṣir al-Dīn, 1849-1918
Princeton subject headings:
Europe--Description and travel.
Iran--Description and travel.
Ẓill al-Sulṭān, Masʻūd ibn Nāṣir al-Dīn, 1849-1918--Travel--Europe.
Ẓill al-Sulṭān, Masʻūd ibn Nāṣir al-Dīn, 1849-1918--Travel--Iran.