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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,. (1969). Reproduction in the Plains Zebra, Equus burchelli boehmi: Behaviour and Ecological Factors. J Reprod Fert Suppl, 6, 339–345.
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Klingel H,. (1968). Das Sozialleben der Steppenzebras. Naturwissensch Medizin, 5, 10–21.
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Klingel H,. (1969). The social organization and population ecology of the Plains Zebra (Equus quagga). Zoologica Africana, 4, 249–263.
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Klingel H,. (1987). Unpaarhufer, Pferde. in Grzimek B (ed): Grzimeks Enzyklopädie Säugetiere, 4, 548–592, Kindler.
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Klingel H,. (1965). Notes on tooth development and ageing criteria in the Plains Zebra Equus quagga boehmi Matschie. E Afr Wildl J, 3, 127–129.
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