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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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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,. (1974). Soziale Organisation und Verhalten des Grevyzebras (Equus grevyi). Z. Tierpsychol., 36, 37–70.
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Klingel H,. (1972). The behavior of horses (Equidae). Handb. Zoolog., 8, 1–68.
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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). The social organization and population ecology of the Plains Zebra (Equus quagga). Zoologica Africana, 4, 249–263.
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Klingel H,. (1980). Unpaarhufer. Brehms Thierleben II, , 277–285.
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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,. (1978). Was wird aus den Grevy- Zebras? Sielmanns Tierwelt, 2, 12–19.
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Klingel H,. (1968). Zebrafamilien dauern bis zum Tode. Das Tier 7, , 10–13.
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