1993-8012 1993-8012 S1993-80122020000300253 Angola Cuba 00 09 2020 00 09 2020 36 3 253 267

1986 2008 34 91-6 2016 115 93-104 2015 17-19 June The Netherlands 2014 138 435-53 2010 30 412-20 2010 114 3-4 3-4 191-7 2013 2018 1991 47 295-303 2016 1993 32 251-64 2009 59 296 296 91-104 INE 2014 2015 11 1 1 52-61 Ministerio de Geología y Minas 2017 NC 188 2002 2012 2017 1977 88 1 1 72-7 1990 25 3 3 221-6 2003 42 4 4 215-21