Columbia subject headings:
Saudi Arabia, Northern--Description and travel.
Harvard subject headings:
Islam--Missions--Saudi Arabia--Ḥafar al-Bāṭin.
Saudi Arabia--Description and travel.
Travelers--Saudi Arabia--Ḥafar al-Bāṭin.
Travelers’ writings, Arabic--Saudi Arabia--Ḥafar al-Bāṭin.
Ulama--Travel--Saudi Arabia--Ḥafar al-Bāṭin.
Princeton subject headings:
Ḥudūd al-Shamālīyah (Saudi Arabia)--Description and travel.
Shithrī, ʻAbd al-ʻAzīz ibn Muḥammad, 1887 or 1888-1967 or 1968. Riḥlat al-shamāl.