2077-2874

2077-2874

S2077-28742019000300020

Cuba

Cuba

00 09 2019

00 09 2019

11 3 20 31

1

2017 36 2 2

2

2017 6 3 3

3

2019 18 1 1

4

Unicef 2006

5

2016

6

Ministerio de Educación Superior 2016

7

2004

8

2014 16 3 3

9

1999

10

2011 8-9 15-16 15-16