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Citations
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Olberg G,. (1959). Der artfremde Kumpan in der Umwelt des Pferdes. Kosmos, 55, 431–436.
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Olberg G,. (1959). Pferde treiben Körperpflege. Natur und Volk, 89, 105–114.
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Olivier W,. (1987). Is it possible to bring back the quagga? Roan News, 4, 1–2.
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Olsen Fw, H. R. (1977). Food relations of wild free – roaming horses to livestock and big game, Red Desert, Wyoming. J Range Mgmt, 30, 17–20.
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Orlov Vn,. (1961). Schädelform Kulan. Zool Z, 40, 592–601.
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Orlov Vn,. (1968). Equus Hemionus Pall. Geograficeskaja Sbornik trudov zool MGU, 10, 37–52.
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Orr Djc,. (1963). Grazing sucession in Ngorongoro Crater. Unveröffentl. Manuskript, .
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OTT EA et al,. (1979). Acceptability of dried citrus pulp by horses. J Animal Sci, 49, 983–987.
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Ottaway Cw,. (1961). Aspects of equine and canine locomotion In: Harris JW; Vertebrate Lokomotion. Symp Zool Soc Lond, 5, 101–113.
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