Influences of Geographic Environment / On the Basis of Ratzel's System of Anthropo-Geography

by Ellen Churchill Semple

M.A. Stein, The Sand-Buried Ruins of Khotan, pp. 275-324, 354-408. London, 1903.

H. Barth, Travels in North and Central Africa, Vol. I, chap. III. New York, 1857.

Ellsworth Huntington, The Pulse of Asia, pp. 160-190, 209, 304, 309-310, 315, 367. Boston, 1907.

J.L, Burckhardt, Notes on the Bedouins and Wahabys, Vol. I, pp. 57-64, 238-242. London, 1831.

E. Huntington, The Pulse of Asia, pp. 137-138. Boston, 1907.

John de Plano Carpini, Journey to the Northeast, pp. 109-111, 120. Hakluyt Society, London, 1904. Journey of William de Rubruquis, pp. 191-193, 203, 224. Hakluyt Society, London, 1903.

W.W. Rockhill, The Land of the Lamas, p. 80. New York, 1891.

Vambery, Reise in Mittel Asien, p. 295. Leipzig, 1873.

Nachtigal, Sahara und Sudan, Vol. I, pp. 257, 268. Berlin, 1879.

E. Huntington, The Pulse of Asia, p. 74. Boston, 1907.