History of the Knysna Elephants: The Southernmost Free Roaming Elephants in the World by Ryno Joubert, 2020
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History of the Overberg, George, Knysna & Tsitsikamma Forests Pre-modern history to 2011 by Ryno Joubert
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The Distribution of the George, Knysna & Tsitsikamma Forests: Historical and Current by Ryno Joubert
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