C. U. Ariëns Kappers — Anthropology of the Near East. (Publications of the American University of Beirut, Social series, N° 2). Beyrouth, American Press, 1932. ; George E. Post. — Flora of Syria, Palestine and Sinai. Second edition, extensively revised and elarged by John Dinsmore. (American University of Beirut, Publications of the Faculty of arts a. sciences, Natural sciences series, Number 1). Vol. I. IBeyrouth, American Press, 1932