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Klingel H,. (1975). Die soziale Organisation der Equiden. Verh Dtsch Zool Ges in Karlsruhe, , 71–80.
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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,. (1970). Das Sozialverhalten der Zebras. Sitzungsber Ges Naturforsch Freunde Berlin NF, 10, 77–78.
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Klingel H,. (1965). Notes on the Biology of the Plains Zebra Equus quagga boehmi Matschie. E Afr Wildl J, 3, 86–88.
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Klingel H,. (1977). Eine feine Gesellschaft. GEo, 10, 106–120.
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Klingel H,. (1978). La Vie Sociale des Zebres et des Antilopes. La Recherche, 86, 112–120.
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Klingel H,. (1974). A comparison of the Social Behaviour of the Equidae. in Geist V & Walther FR (eds): The Behaviour of Ungulates and its Relation to Management. IUCN Publ, , 124–132.
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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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Klingel H,. (1980). Die soziale Organisation freilebender Equiden. Equus, 2/1, 128–131.
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