Thomas, Benjamin Earl, 1913- Trade routes of Algeria and the Sahara / B.E. Thomas. - Berkeley : University of California Press , 1957. - iv, 165-287p. : ill. maps. ; 26 cm. - University of California publications in geography; v.8, no.3 . Includes bibliographical references (p. 273-285). Subjects--Topical Terms: Trade routesTransportation--AlgeriaTransportation--Sahara Dewey Class. No.: PSF 910.711794 C35