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DOBRORUKA LJ et al,. (1987). An analysis of the population of Grevy's zebra. Int Zoo Yb, 26, 290–293.
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Dollman Jg,. (1935). A new race of wild ass from the Sudan, Asinus asinus dianae. Proc LInnean Soc Lond May, , 132–135.
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Doreau M,. (1978). Comportement alimentaire du cheval à l`écurie. Ann Zootech, 27, 291–302.
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DOREAU M et al,. (1980). Activités alimentaires nocturnes du cheval au pâturage. Ann Zootech, 29, 299–304.
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Douglas Rh, G. O. (1975). Development of the equine fetus and placenta. J Reprod Fert (Suppl), 23, 495–498.
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Dovtschin N,. (1961). The Przewalski horse in Mongolia. Equus, 1, 22–27.
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DREVEMO S et al,. (1980). Equine locomotion: The analysis of linear and temporal stride characteristics of trotting standardbreds. Equine Vet J, 12, 60–65.
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Duerst Ju,. (1922). Das Alter des Pferdes und dessen Bestimmung.
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Duncan P,. (1979). Time-budgets of Camrgue horses; II. Time- budgets of adult horses and weaned sub-adults. Behaviour, 72, 26–49.
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