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GINTHER OJ et al,. (1972). Characteristics of estrus, diestrus and ovulation in mares and effects of season and nursing. Am J Vet Res, 33, 1935–1939.
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Guili De C,. (1972). On the type form of Equus Stenonis Cocchi. Paleont Ital, 68, 35–49.
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Joubert E,. (1972). Activity patterns shown by Hartmann Zebra Equus zebra hartmannae in South West Africa with reference to climatic factors. Madoqua, 5, 33–52.
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Joubert E,. (1972). The social organization and associated behaviour in the Hartmann Zebra. Madoqua 6, , 17–56.
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Joubert E,. (1972). Tooth development and age determination in the Hartmann Zebra. Madoqua 6, , 5–16.
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Klingel H,. (1972). The Social Behaviour of the African Equidae. Zoologica Africana, 7, 175–185.
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Klingel H,. (1972). Project 496 Somali Wild Ass: Status Survey in the Danakil Region, Ethiopia. World Wildlife Yearbook 1971, , 75–81.
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Petersen Jcb,. (1972). An indentification system for zebra (Equus burchelli, Gray). E Afr Wildl J, 10, 59–64.
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Rossdale Pd,. (1972). Das Pferd Basel, München.
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Ruckebusch Y,. (1972). The relevance of drowsiness in the circadian cycle of farm animals. Anim Beh, 20, 637–643.
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