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| Bobko, C.M., 2006. Reproductive management strategies for an aging female black rhinoceros (Diceros bicornis michaeli) at the Denver Zoological Foundation: pp. 1-5
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| Bobko, C.M., 2002. Practical applications of operant conditioning for health, research and behavior in the black rhinoceros: p. 165
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| In: Aubery, L. et al. Proceedings of the [second] Rhino Keepers' Workshop 2001, Zoological Society of San Diego May 7-10, 2001. San Diego, Zoological Society |
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| Bobko, C.M., 1996. Detection and treatment of a possible new disease syndrome in a captive Black rhinoceros (Diceros bicornis). Proceedings of the 23rd National Conference of the American Association of Zoo Keeper's Inc. Detroit, Michigan, October 6-10: 26-30, 2 tables
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