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Hodgden, R. 1989. Short-term separation and stress of mother and daughter Southern White rhinoceroses (Ceratotherium simum simum) at the North Carolina Zoological Park. AAZPA Regional Conference Proceedings 1988: 272-279, 5 figures.
Higgins, Anne 1986. The African veldt adventure at Jacksonville Zoo. AAZPA Regional Conference Proceedings 1985: 55-58.
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Schmidt, C.R. 2003. Return of the Black rhinos (Diceros bicornis minor) to Zambia. Proceedings 58th Annual Conference (WAZA) San Jose' Costa Rica: 186-187, 6 figs..