| Duffy, R., 2015. Responsibility to protect? Ecocide, interventionism and saving biodiversity. Paper presented at the Sheffield Animals Research Colloquium: pp. 1-16
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| Duffy, R., 2000. The international politics of the rhino horn & ivory trade: pp. 141-172
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| Duffy, R., 2000. Killing for conservation: wildlife policy in Zimbabwe. Harare, Weaver, pp. i-xiii, 1-210
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