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Citations
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KING JM et al,. (1966). The reproductive physiology of male zebra. Symp Zool Soc Lond 15, , donkey hybrids.
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Thenius E,. (1966). Die Vorgeschichte der Einhufer. Z Säugetierk, 31.
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Tuijn P,. (1966). Historical notes on the quagga. Bijdragen tot de Dierkunde, 36.
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