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Citations
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Bannikov Ag,. (1981). Kulan Moskau.
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Berger J,. (1981). The role of risks in mammalian combat: Zebra and onager fights. Z Tierpsychol 56, , 297–304.
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Gingerich Pd,. (1981). Variation, sexual dimorphism, and social structure in the early Eocene horse Hyracotherium. Paleobiol, , 443–455.
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HUGHES RD et al,. (1981). Interactions between Camague horses and horseflies. Bull Entomol Res 71, , 227–242.
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Clutton-Brock, J. (1981). Domesticated animals from early times. Austin: Univ of Texas Press.
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Wittenberger, J. F. (1981). Animal Social Behavior. Boston: Duxbury Press.
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Bean, P. (1981). Punishment: A Philosophical and Criminological Enquiry.
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