1409-4258 1409-4258 S1409-42582020000300043 10.15359/ree.24-3.3 Costa Rica Spain South Africa 00 12 2020 00 12 2020 24 3 43 66

2013 18 18 145-57 2002 30 2 2 181-205 2011 220 220 99-116 2007 2007 5 2 2 26-40 2014 2003 17 1 1 31-8 2010 1-52 2008 3 1 1 57-83 2016 2001 2012 2017 2007 15 15 13-70 2000 2016 228 169-74 UNESCO 1998 University of the Free State 2006 06.1 06.1 University of the Free State 2011 University of the Free State 2012 a University of the Free State 2012 b University of the Free State 2013 University of the Free State 2014 University of the Free State 2015 1999 2012 32 3 3 384-93 2013 2015 44 3 3 310-24