Note 1417 — Chapter XII · REGIONAL GEOGRAPHY (continued 2)
Reading edition
For a discussion of trade routes westward from Egypt and Nubia across the Sahara according to Benjamin of Tudela and Edrisi, see Paul Borchardt, Die grossen Ost-West Karawanenstrassen durch die Libysche Wüste, in Petermanns Mitteilungen, vol. lxx, Gotha, 1924, pp. 219–223.