Institution: | 1. Department of Geography, University of Georgia, Athens, GA, 30602, USA 2. Department of Geology, University of Georgia, Athens, GA, 30602, USA 3. Department of Plant Sciences, University of the Free State, Bloemfontein, 9301, South Africa 4. Department of Geography, Western Illinois University, 1 University Circle, Macomb, IL, 61455, USA
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