Obaida, Abdulaziz, Dr. Rub Al Khali : Empty Quarter / Dr. Abdulaziz Al Obaida - Riyadh : Desert Publisher, 2009. - 229 pages. ; 30 cm. ISBN: 9786030014675 (Hardback.). Subjects--Topical Terms: Saudi Arabia -- Description and travel -- Pictorial works LC Class. No.: (KWA) SAU DS208