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Rookmaaker, L.C. 1998. Chapter 2. Statistics on demography and reproduction. In: Rookmaaker, L.C., The rhinoceros in captivity: a list of 2439 rhinoceroses kept from Roman times to 1994. The Hague. pp. 21-25.

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Rookmaaker, L.C.; Rhino Resource Center; Ziegler, D.; Monson, J.; Strien, W. van; Athanassiou, A.; Billia, E.M.E. 2021. New literature in the Rhino Resource Center. Electronic Newsletter of the Rhino Resource Center no. 63 (June): 1-21.