Office E. Posters presented at the School of Environmental Sciences and Development of the North-West University, Potchefstroom Campus, South Africa on 05 October 2012. SATNT [Internet]. 21Oct.2014 [cited 20Apr.2024];33(1):2 bladsye. Available from: http://www.satnt.ac.za/index.php/satnt/article/view/569