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The role of reproductive science and technology in achieving the birth of the first Sumatran rhino calf produced in captivity in 112 years
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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.