|
Olberg G,. (1959). Pferde treiben Körperpflege. Natur und Volk, 89, 105–114.
|
|
Olivier W,. (1987). Is it possible to bring back the quagga? Roan News, 4, 1–2.
|
|
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.
|
|
Orlov Vn,. (1961). Schädelform Kulan. Zool Z, 40, 592–601.
|
|
Orlov Vn,. (1968). Equus Hemionus Pall. Geograficeskaja Sbornik trudov zool MGU, 10, 37–52.
|
|
Orr Djc,. (1963). Grazing sucession in Ngorongoro Crater. Unveröffentl. Manuskript, .
|
|
OTT EA et al,. (1979). Acceptability of dried citrus pulp by horses. J Animal Sci, 49, 983–987.
|
|
Ottaway Cw,. (1961). Aspects of equine and canine locomotion In: Harris JW; Vertebrate Lokomotion. Symp Zool Soc Lond, 5, 101–113.
|
|
Owaga Ml,. (1975). The feeding ecology of wildbeest and zebra in Athi – Kaputei plains. E Afr Wildl J, 13, 375–384.
|
|
Owaga Ml,. (1977). Comparison of analysis of stomach contents and feacal samples from zebra. E Afr Wildl J, 15, 217–222.
|
