0253-5785 0253-5785 S0253-57852018000400005 Ecuador Cuba 00 12 2018 00 12 2018 45 4 5 11

2010 2da Edition 856 1987 4ta Edición 234 2015 64 2016 79 2012 53 53 237-47 2006 387 1983 193 2010 138 138 1970 619 2015 2017 2015 42-7 2002 426