| Patton, M.L.; Swaisgood, R.R.; Czekala, N.M.; White, A.M.; Fetter, G.A.; Montagne, J.P.; Rieches, R.G.; Lance, V.A., 1999. Reproductive cycle length and pregnancy in the southern white rhinoceros (Ceratotherium simum simum) as determined by fecal pregnane analysis and observations of mating behavior. Zoo Biology 18 (2): 111-127, figs. 1-4, tables 1-2
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| Roth, T.L.; Patton, L.; Brown, J.; Czekala, N.; Swaisgood, R.; Lance, V., 1998. The North American experience: female hormonal cycles in southern white rhinoceros: pp. 6-8
| In: Patton, L. et al. Proceedings of a workshop on problems associated with the low rate of reproduction among captive-born female southern white rhinoceros (Ceratotherium simum simum). San Diego, Zoological Society: pp. 1, 1-51 |
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| Patton, L.; Czekala, N.; Lance, V., 1998. Proceedings of a workshop on problems associated with the low rate of reproduction among captive-born female southern white rhinoceros (Ceratotherium simum simum). San Diego, Zoological Society, pp. 1, 1-51
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| Lance, V., 1998. Under threat of pollution: Nepal's Royal Chitwan National Park. CRES Report Spring 1998: 1-2, 5 images
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| Henry, S.; Lance, V.A.; Conlon, J.M., 1993. Purification and characterization of insulin and the C-peptide of proinsulin from Przewalski's horse, zebra, rhino, and tapir (Perissodactyla). General and Comparative Endocrinology 89: 299-308, figs. 1-3, tables 1-3
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| Henry, J.S.; Lance, V.A.; Conlon, J.M., 1991. Primary structure of pancreatic polypeptide from four species of Perissodactyla (Przewalski's horse, zebra, rhino, tapir). General and Comparative Endocrinology 84: 440-446, figs. 1-3, tables 1-3
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