| Brace, S.; Dean, C., 2021. Sounding the horn: three years of rhino horn antiques sold at auction in the UK, 2017 to 2019. London, Save the Rhino International: pp. 1-267
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| Brace, S.; Dean, C., 2018. Sounding the Horn: A survey of rhino horn antiques sold in 2017 at auction in the UK. London, Save the Rhino International, pp. 1-94
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