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

by Ellen Churchill Semple

Journey of John de Carpini and William de Rubruquis in 1253, pp. 8, 217. Hakluyt Society, London, 1903.

James Bryce, Impressions of South Africa, pp. 107, 421. New York, 1897.

Wilhelm Roscher, National-Oekonomik des Ackerbaues, p. 44. Stuttgart, 1888.

A full discussion in Malthus, Principles of Population, Book I, chap. 7.

J.L. Burckhardt, Notes on the Bedouins and Wahabys, Vol. I, pp. 133-144, 157-160. London, 1831. S.M. Zwemer, Arabia, The Cradle of Islam, 155-157. New York, 1900.

Vambery, Reise in Mittelasien, pp. 285, 289-297. Leipzig, 1873.

Alexis Krausse, Russia in Asia, pp. 127-129. New York, 1899.

Ratzel, History of Mankind, Vol. III, pp. 174-175. London, 1896-1898.

Wallace, Russia, pp. 340-342. New York, 1904.

L. March Phillipps, In the Desert, pp. 17, 63-66. London, 1905.