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GINTHER OJ et al,. (1972). Characteristics of estrus, diestrus and ovulation in mares and effects of season and nursing. Am J Vet Res, 33, 1935–1939.
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Hendrichs H,. (1972). Beobachtungen und Untersuchungen zur Ökologie und Ethologie, insbesondere zur sozialen Organisation, ostafrikanischer Säugetiere. Z. Tierpsychol., 30, 146.
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Petersen Jcb,. (1972). An indentification system for zebra (Equus burchelli, Gray). E Afr Wildl J, 10, 59–64.
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Briand Petersen, J. C. (1972). An identification system for zebra (Equus burchelli, Gray). E. Afr. Wildl. J., 10, 59–63.
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Spinage Ca,. (1972). Age estimation of zebra. E Afr Wildl J, 10, 273–278.
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Spinage Ca,. (1972). African ungulate life tables. Ecology, 53, 645–652.
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Joubert E,. (1972). Activity patterns shown by Hartmann Zebra Equus zebra hartmannae in South West Africa with reference to climatic factors. Madoqua, 5, 33–52.
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