na INLIS000000000031342 Ind 0010-1218013180 Saudi Arabia: with an account of the development of its natural resources TWITCHELL, K.S. K.S. Twitchell New Jersey Princeton University Press 1953 xxi, 231 p.: ill.; 21 cm xxi, 231 p.: ill.; 21 cm 908(532)TWIs Index p. 221-231 908(532) NATURAL RESOURCES SAUDI ARABIA 831/73