| Schaffer, N.E.; Agil, M.; Zainuddin, Z.Z., 2020. Ramifications of reproductive diseases on the recovery of the Sumatran rhinoceros Dicerorhinus sumatrensis (Mammalia: Perissodactyla: Rhinocerotidae). Journal of Threatened Taxa 12 (3): 15279-15288
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| Bosi, E.J.; Kilbourn, A.; Schaffer, N.E., 2002. Sumatran rhinoceros conservation strategy in Sabah, Malaysia: pp. 166-172
| 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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| Schaffer, N.E.; Meehan, T.P.; Jeyendram, R.S., 2002. Successful electroejaculation and other semen procurement methods from four species of rhinoceros (Ceratotherium simum, Diceros bicornis, Rhinoceros unicornis, Dicerorhinus sumatrensis): p. 218
| 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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| Schaffer, N.E.; Bryant, W., 2002. Progesterone supplemented pregnancy in a black rhinoceros (Diceros bicomis): a case report: pp. 316-321
| 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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| Schaffer, N.E.; Agil, M.; Bosi, E., 2002. Utero - ovarian pathological complex of the Sumatran Rhinoceros (Dicerorhinus sumatrensis): p. 322
| 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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| Tuah, M.N.A.; Kilbourn, A.; Bosi, E.; Schaffer, N.E.; Mohamed, M., 2002. Demographics of Sumatran rhinoceros (Dicerorhinus sumatrensis harrissoni) in Sabah, Malaysia: correlation to food distribution in Tabin Wildlife Reserve: p. 330
| 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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| Schaffer, N.E.; Bryant, W., 2001. Progesterone supplemention and pregnancy in a black rhinoceros (Diceros bicomis): A case report: p. 76
| 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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| Schaffer, N.E.; Meehan, T.P.; Jeyendram, R.S., 2001. Successful electroejaculation and procurement methods from four species of rhinoceros (Ceratotherium simum, Diceros bicornis, Rhinoceros unicornis, Dicerorhinus sumatrensis): p. 47
| 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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| Schaffer, N.E.; Agil, M.; Bosi, E., 2001. Utero - ovarian pathological complex of the Sumatran Rhinoceros (Dicerorhinus sumatrensis): pp. 76-77
| 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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| Schaffer, N.E.; Meehan, T.P.; Bryant, W.M.; Agnew, D.; Atkinson, M.W.; Wolfe, B., 2001. Ultrasonographic monitoring of electroejaculation in three species of rhinoceros (Ceratotherium simum, Diceros bicornis, Rhinoceros unicornis). Proceedings of the AAZV, AAWV, ARAV, NAZWV Joint Conference 2001: 343
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| Schaffer, N.E., 1999. Sumatran rhinoceros: reproductive data 1991-1999 (with updates and addenda). SOS Rhino, pp. 1-78 (revised 2018)
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| Schaffer, N.E., 1999. Sumatran rhinoceros: reproductive data 1991-1999 (with updates and addenda). SOS Rhino, pp. 1-78 (revised 2018)
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