6Mohr E..The Asiatic Wild Horse.J.A.Allen and Co.Ltd.,London.1971,124.
7Volf J..International Studbook of the Przewalski's horse.Prague Zoo,Prague.1960-1990.
8Ryder O.,Epel N.C.,Benirschke K..Chromosome banding studies of the Equidae.Cytogenet Cell Genet,1978,20:323-350.
9Ryder O..Genetic Studies of Przewalski's Horses and their impact on Conservation.Pp.in:Przewalski's horse:The History and Biology of an Endangered Species(eds.L.Boyd and D.A.Houpt).State University of New York Press,Albany.1994:75-92.
10Groves C..Morphology,Habitat and Taxonomy.Pp.in:Przewalski's horse:The History and Biology of an Endangered Species(eds.L.Boyd and D.A.Houpt).State University of New York Press,Albany.1994:39-60.
