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

by Ellen Churchill Semple

Holdich, India, pp. 255-257. London, 1905.

G.G. Chisholm, Commercial Geography, p. 329. London, 1904.

From an interview with the supervising agent for South America.

G.G. Chisholm, Commercial Geography, p. 356. London, 1904.

Henry Buckle, History of Civilization in England, Vol. I, pp. 31-33. New York, 1884.

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