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Podhajsky, A. (1967). The Complete Training of Horse and Rider In the Principles of Classical Horsemanship. Garden City, New York: Doubleday & Company, Inc,.
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Maddock, L. (1995). The “migration” and grazing succession. In A. R. E. Sinclair, & A. R. E. Norton-Griffiths (Eds.), Serengeti: Dynamics of an Ecosystem. Chicago: University Of Chicago Press.
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Schaller, G. B.:. (1976). The Serengeti Lion: A Study of Predator-Prey Relations (Wildlife Behavior and Ecology series). Chicago: University Of Chicago Press.
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Connor, R. C., Wells, R. S., Mann, J., & Read, A. J. (2000). The bottlenose dolphin: Social relationships in a fission-fusion society. In J. Mann, R. C. Connor, P. L. Tyack, & H. Whitehead (Eds.), Cetacean Societies: Field Studies of Dolphins and Whales. (pp. 91–126). Chicago: University of Chicago Press.
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Berger, J. (1986). Wild Horses of the Great Basin: Social Competition and Population Size. Chicago: University of Chicago Press.
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Yulk G. (1998). Leadership in organizations. Englewood Cliffs, NJ: Prentice-Hall.
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Hinde R. A. (1979). Towards Understanding Relationships (European Monographs in Social Psychology). Londres: Academic Press.
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Heyes, C., & Galef, B. G. (Eds.). (1996). Social learning in animals: the roots of culture. San Diego, CA: Academic Press, Inc.
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Fragaszy, D., & Visalberghi, E. (1996). Primates “primacy” reconsidered. In C. Heyes, & B. G. Galef (Eds.), Social learning in animals: the roots of culture (pp. 65–84). Academic Press, Inc.
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Lefebvre, L., & Giraldeau, L. - A. (1996). Is social learning an adaptive specialisation? In C. M. Heyes, & B. G. Galef B. G..Jr. (Eds.), Social learning in animals: The root of culture (pp. 107–128). San Diego: Academic Press.
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