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

by Ellen Churchill Semple

Ibid., pp. 83, 87, Map of Migrations, p. 3.

Archibald Little, The Far East, pp. 34-38. Oxford, 1905.

Strabo, Book VIII, chap. I, 2.

Heinrich Barth, Travels in North and Central Africa, Vol. II, p. 548. New York, 1857.

Joseph Partsch, Central Europe, pp. 104-105. London, 1903.

E.F. im Thurn, Among the Indians of Guiana, pp. 167-171, 202-207. London, 1883.

W. Z. Ripley, Races of Europe, p. 237. New York, 1899.

Ibid., p. 469.

H. Barth, Human Society in Northern Central Africa, Journal of the Royal Geog. Society, Vol. XXX, p. 116. London, 1860.

Moritz Wagner, Die Entstehung der Arten durch räumliche Sonderung. Basel, 1889.