| Hitchins, P.M., 1992. An aerial census of black and square-lipped rhinoceros in northern Botswana, 18 September - 2 October 1992. Report to Department of Wildlife and National Parks, Botswana, pp. 1-19
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| Hitchins, P.M., 1990. Census and marking systems for black rhinoceros Diceros bicornis with special reference to the Zululand game reserves. Game Ranger 1990 December: 1-12, figs. 1-12, tables 1-8
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| Hitchins, P.M., 1989. Census and marking systems for black rhinoceros Diceros bicornis with special reference to the Zululand game reserves (abstract). Koedoe 32 (2): 84-85, tables 1-2
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| Hitchins, P.M., 1986. Earlessness in the black rhinoceros - a warning. Pachyderm 7: 8-10, figs. 1-5, table 1
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| Hitchins, P.M.; Brooks, P.M., 1986. Preliminary report on the population size and trend (1973-1985) of the black rhinoceros in the Hluhluwe and Umfolozi game reserves, 1985. Pietermaritzburg, Natal Parks, Game and Fish Preservation Board, pp. 1-11
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| Hitchins, P.M., 1985. Black rhino project : Summary of results from 1st survey, Umfolozi Game Reserve. Report Umfolozi
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| Hitchins, P.M., 1985. Black rhino project : Summary of results from 2nd survey, Umfolozi Game Reserve. Report Umfolozi
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| Hitchins, P.M., 1985. Black rhino project : Summary of results from 3rd survey, Umfolozi Game Reserve. Report Umfolozi
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| Hitchins, P.M., 1984. Translocation of black rhinoceros (Diceros bicornis minor) from the Natal game reserves 1962-1983. Lammergeyer 33: 45-48, tables 1-6
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| Hitchins, P.M.; Anderson, J.L., 1983. Reproduction, population characteristics and management of the black rhinoceros Diceros bicornis minor in the Hluhluwe/ Corridor/ Umfolozi game reserve complex. South African Journal of Wildlife Research 13 (3): 78-85, figs. 1-3
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