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Solvay, A. 1909. Une trophée de chasse. L’Expansion Belge, revue mensuelle illustrée 1 (12): 586.
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Jauffret, J.L. 1852. Travels of Rolando; or, a tour round the world. Translated by Miss Aikin. Newly corrected and revised by Cecil Hartley. Illustrated by William Harvey. London, George Routledge.
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Powell Cotton, P.H.G. 1907. An explorer's honeymoon: Major Cotton's unique experience. Illustrated London News 1907 April 13: 561.
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Powell Cotton, P.H.G. 1907. An honeymoon among the pygmies: Major and Mrs. Powell Cotton's African Adventures. Graphic (London) 1907 March 9 (Supplement): 1-4.
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Ryder, O.A.; Saragusty, J.; Durrant, B. 2020. Exploring the limits of saving a subspecies: The ethics and social dynamics of restoring northern white rhinos (Ceratotherium simum cottoni). Conservation Science and Practice 2020;e241: 1-8 - https://doi.org/10.1111/csp2.241.
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Hornaday, W.T. 1922. The minds and manners of wild animals; a book of personal observations. New York, C. Scribner.
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Anonymous 2016. White rhino's death leaves just three in the world. Swara, Nairobi January-March 2016: 12.