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2. Crosby, A. W. Virgin soil epidemics as a factor in the aboriginal depopulation in America. William Mary Q. 33, 289–299 (1976).
3. McNeill, W. H. Plagues and Peoples. (Anchor Books, New York, 1977).
4. Hemming, J. Red Gold: The Conquest of the Brazilian Indians. (Harvard University Press, Cambridge, 1978).
5. Hemming, J. Amazon Frontier: The Defeat of the Brazilian Indians. (Harvard University Press, Cambridge, 1987).