| Mraz, B.; Modler, F.; Walzer, C.; Jago, M.; Reinhardt, P.; Schwarzenberger, F., 2002. Faecal steroid analysis in free-ranging female white rhinoceroses (Ceratotherium simum simum) on Otjiwa Game Ranch in Namibia: p. 315
| 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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| Mraz, B.; Modler, F.; Walzer, C.; Jago, M.; Reinhardt, P.; Schwarzenberger, F., 2001. Faecal steroid analysis in free-ranging female white rhinoceroses (Ceratotherium simum simum) on Otjiwa Game Ranch in Namibia: p. 75
| In: Schwammer, H.M. et al. Recent research on elephants and rhinos: Abstracts of the International Elephant and Rhino Research Symposium, June 7-11, 2001. Vienna, Zoologischer Garten: pp. 1-80 |
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