Dequin, Horst. The challenge of Saudi Arabia : the regional setting and economic development as a result of the conquest of the Arabian peninsula by King Abdul Aziz al Sa_ud / H.F.E. Dequin. - Hufuf [Saudi Arabia : s.n.], 1976. - 147 p. : ill. (some col.) ; 23 cm. Includes indexes. Summary in Arabic. Bibliography: p. 128-133. LCCN: 81111324 Subjects--Geographic Terms: Saudi Arabia--Economic policy. LC Class. No.: HC415.33 / .D47 1976