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| Silinski, S.; Walzer, C.; Schwarzenberger, F.; Stolla, R., 2002. Influence of alpha-2-agonists on manual semen collection in a standing white rhinoceros (Ceratotherium simum simum): pp. 323-326, figs. 1-3
| In: Schwammer, H.M. et al. A research update on elephants and rhinos: proceedings of the International Elephant and Rhino Research Symposium, Vienna, June 7-11, 2001. Muenster, Schuling: pp. 1-352 |
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| Hermes, R.; Hildebrandt, T.B.; Walzer, C.; Goeritz, F.; Schwarzenberger, F., 2001. Reproductive assessment in the captive white rhinoceros - current standing: pp. iv-viii, figs. 1-4
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