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| | Comparative Placentation |
 | | Houck, M.L., Ryder, O.A., Váhala, J., Kock, R.A. and Oosterhuis, J.E.: Diploid chromosome number and chromosomal variation in the white rhinoceros (Ceratotherium simum). |
 | | Patton, M.L., Swaisgood, R.R., Czekala, N.M., White, A.M., Fetter, G.A., Montagne, J.P., Rieches, R.G. and Lance, V.A.: Reproductive cycle length and pregnancy in the Southern white rhinoceros (Ceratotherium simum simum) as determined by fecal pregnane analysis and observations of mating behavior. |
 | | Combined serial ultrasonography and fecal progestin analysis for reproductive evaluation of the female white rhinoceros (Ceratotherium simum simum): Preliminary results. |
| medicine.ucsd.edu /cpa/wrhino.html (2409 words) |
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