Columbia subject headings:
Harvard subject headings:
Bedouins--Rubʻal Khālī.
Kirkby, Bruce, 1968---Journeys--Rubʻal Khālī.
Rubʻ al-Khali--Description and travel.
Thesiger, Wilfred, 1910---Journeys--Rubʻal Khālī.
Princeton subject headings:
Kirkby, Bruce, 1968---Travel--Rubʻ al-Khali.
Rubʻ al-Khali--Description and travel.