| South Africa Government, 2012. National Environmental Management: Biodiversity Act (10/2004): Norms and standards for the marking of rhinoceros horn and hunting of white rhinoceros for trophy hunting purposes. Government Gazette (Staatskoerant) no. 35248, 10 April 2012: 3-8
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| South Africa Government, 2011. National Environmental Management: Biodiversity Act (10/2004): Proposed amendments to the norms and standards for the marking of rhinoceros horn and hunting of white rhinoceros for trophy hunting purposes. Government Gazette (Staatskoerant) no. 34630, 30 September 2011: 3-5
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| South Africa Government, 2009. National Environmental Management: Biodiversity Act (10/2004): Marking of rhinoceros horn and hunting of white rhinoceros for trophy hunting purposes. Government Gazette (Staatskoerant) 524 (31894), 13 February 2009: 1-6
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