%0 Journal Article %T National Senior Certificate results belie conceptual and skill limitations of school-leavers %A Jonathan Jansen %J South African Journal of Science %D 2012 %I Academy of Science of South Africa %R 10.4102/sajs.v108i3/4.1165 %U http://www.sajs.co.za/index.php/SAJS/article/view/1165