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Monitoring follicle size with ultrasound as an important tool to determine a proper time for mating in the Sumatran rhinoceros Dicerorhinus sumatrensis (Fischer 1814) in the Sumatran Rhino Sanctuary (SRS), Way Kambas National Park, Lampung
Hodgden, R. 1998. Reproductive management and research of 1.1 Eastern Black rhinoceros (Diceros bicornis michaeli) at Zoo Atlanta. AZA Annual Conference Proceedings 1997: 304-306.
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Schaffer, N.E.; Berkeley, E.V. 1993. Serum, urinary and fecal steroid correlates of reproductive behavior in the Black rhinoceros (Diceros bicornis) abstract. Annual Conference Proceedings AAZPA/CAZPA 1992: 572.